[dependabot]

Bumps the uv group with 1 update in the /examples/example-ai-crewai directory: litellm.
Bumps the uv group with 1 update in the /examples/example-ai-dspy directory: litellm.
Bumps the uv group with 1 update in the /examples/example-ai-langchain directory: langgraph-sdk.
Bumps the uv group with 1 update in the /examples/example-ai-langgraph directory: langgraph-sdk.
Bumps the uv group with 1 update in the /examples/example-ai-litellm directory: litellm.
Bumps the uv group with 1 update in the /examples/example-ai-llamaindex directory: nltk.
Bumps the uv group with 3 updates in the /examples/example-ai-pydantic-ai directory: authlib, fastmcp and joserfc.

Updates litellm from 1.88.6 to 1.100.4

Release notes

Sourced from litellm's releases.

v1.100.4

Verify Docker Image Signature

All LiteLLM Docker images are signed with cosign. Every release is signed with the same key introduced in commit 0112e53.

Verify using the pinned commit hash (recommended):

A commit hash is cryptographically immutable, so this is the strongest way to ensure you are using the original signing key:

cosign verify \
  --key https://raw.githubusercontent.com/BerriAI/litellm/0112e53046018d726492c814b3644b7d376029d0/cosign.pub \
  ghcr.io/berriai/litellm:v1.100.4

Verify using the release tag (convenience):

Tags are protected in this repository and resolve to the same key. This option is easier to read but relies on tag protection rules:

cosign verify \
  --key https://raw.githubusercontent.com/BerriAI/litellm/v1.100.4/cosign.pub \
  ghcr.io/berriai/litellm:v1.100.4

Expected output:

The following checks were performed on each of these signatures:
  - The cosign claims were validated
  - The signatures were verified against the specified public key

---

Full Changelog: BerriAI/litellm@v1.100.3...v1.100.4

v1.100.3

Verify Docker Image Signature

All LiteLLM Docker images are signed with cosign. Every release is signed with the same key introduced in commit 0112e53.

Verify using the pinned commit hash (recommended):

A commit hash is cryptographically immutable, so this is the strongest way to ensure you are using the original signing key:

cosign verify \
  --key https://raw.githubusercontent.com/BerriAI/litellm/0112e53046018d726492c814b3644b7d376029d0/cosign.pub \
  ghcr.io/berriai/litellm:v1.100.3

... (truncated)

Commits

• 883282f Merge pull request #10 from BerriAI/litellm_session_token_1_100_x
• 241abae chore(lint): scope a TRY004 suppression to the bearer-token salt key check
• f7cd90f refactor(auth): bind UI/CLI session tokens to their own AES-GCM context
• bdff5cb Merge pull request #9 from BerriAI/litellm_bump_1_100_4
• cd6eb10 bump: litellm 1.100.3 -> 1.100.4
• 385266c Merge pull request #43132 from BerriAI/litellm_backport_1_100_x_gpt6_budget_0924
• 04fcee8 chore: refresh uv.lock for 1.100.3
• 5651c5a bump: version 1.100.2 → 1.100.3
• 78be1b7 chore(deps): bump soupsieve to 2.9
• 559dce5 chore(deps): bump pypdf to 6.16.1
• Additional commits viewable in compare view

Updates litellm from 1.88.6 to 1.100.4

Release notes

Sourced from litellm's releases.

v1.100.4

Verify Docker Image Signature

All LiteLLM Docker images are signed with cosign. Every release is signed with the same key introduced in commit 0112e53.

Verify using the pinned commit hash (recommended):

A commit hash is cryptographically immutable, so this is the strongest way to ensure you are using the original signing key:

cosign verify \
  --key https://raw.githubusercontent.com/BerriAI/litellm/0112e53046018d726492c814b3644b7d376029d0/cosign.pub \
  ghcr.io/berriai/litellm:v1.100.4

Verify using the release tag (convenience):

Tags are protected in this repository and resolve to the same key. This option is easier to read but relies on tag protection rules:

cosign verify \
  --key https://raw.githubusercontent.com/BerriAI/litellm/v1.100.4/cosign.pub \
  ghcr.io/berriai/litellm:v1.100.4

Expected output:

The following checks were performed on each of these signatures:
  - The cosign claims were validated
  - The signatures were verified against the specified public key

---

Full Changelog: BerriAI/litellm@v1.100.3...v1.100.4

v1.100.3

Verify Docker Image Signature

All LiteLLM Docker images are signed with cosign. Every release is signed with the same key introduced in commit 0112e53.

Verify using the pinned commit hash (recommended):

A commit hash is cryptographically immutable, so this is the strongest way to ensure you are using the original signing key:

cosign verify \
  --key https://raw.githubusercontent.com/BerriAI/litellm/0112e53046018d726492c814b3644b7d376029d0/cosign.pub \
  ghcr.io/berriai/litellm:v1.100.3

... (truncated)

Commits

• 883282f Merge pull request #10 from BerriAI/litellm_session_token_1_100_x
• 241abae chore(lint): scope a TRY004 suppression to the bearer-token salt key check
• f7cd90f refactor(auth): bind UI/CLI session tokens to their own AES-GCM context
• bdff5cb Merge pull request #9 from BerriAI/litellm_bump_1_100_4
• cd6eb10 bump: litellm 1.100.3 -> 1.100.4
• 385266c Merge pull request #43132 from BerriAI/litellm_backport_1_100_x_gpt6_budget_0924
• 04fcee8 chore: refresh uv.lock for 1.100.3
• 5651c5a bump: version 1.100.2 → 1.100.3
• 78be1b7 chore(deps): bump soupsieve to 2.9
• 559dce5 chore(deps): bump pypdf to 6.16.1
• Additional commits viewable in compare view

Updates langgraph-sdk from 0.4.4 to 0.4.9

Release notes

Sourced from langgraph-sdk's releases.

langgraph-sdk==0.4.9

Changes since sdk==0.4.8

• release(sdk-py): 0.4.9 (#9398)
• feat(sdk-py): add Priority for thread priority settings (#9392)
• chore(deps): remove precautionary third-party upper bounds (#9390)
• chore(deps): bump certifi from 2026.2.25 to 2026.10.19 in /libs/sdk-py (#9370)
• chore(deps-dev): bump dotenv from 17.4.2 to 18.0.4 in /libs/cli/js-examples in the major group (#9154)
• chore(deps-dev): bump the minor-and-patch group in /libs/prebuilt with 6 updates (#9150)

langgraph-sdk==0.4.8

Changes since sdk==0.4.7

• release(langgraph): 1.2.16 (#9334)
• release(sdk-py): 0.4.8 (#9335)
• fix(sdk-py): surface thread stream errors and stop retrying a rejected stream (#9317)
• release(prebuilt): 1.1.1 (#9316)

langgraph-sdk==0.4.7

Changes since sdk==0.4.6

• release(sdk-py): 0.4.7 (#9289)
• release(langgraph): 1.2.15 (#9283)
• fix(sdk-py): end a thread stream's run only on a root lifecycle event (#9228)
• fix: order delta channel replay by task path (#8544)
• release(langgraph): 1.2.14 (#9215)

langgraph-sdk==0.4.6

Changes since sdk==0.4.5

• release(sdk-py): 0.4.6 (#9214)
• fix(sdk-py): percent-encode thread_id and assistant_id in thread stream requests (#9213)
• release(langgraph): 1.2.13 (#9205)
• chore(deps): bump the minor-and-patch group in /libs/sdk-py with 5 updates (#9149)
• chore(deps): bump urllib3 from 2.7.0 to 2.8.0 in /libs/sdk-py (#9134)

langgraph-sdk==0.4.5

Changes since sdk==0.4.4

• release(sdk-py): 0.4.5 (#8988)
• release(langgraph): 1.2.12 (#8987)
• chore(deps): bump anyio from 4.14.2 to 4.15.1 in /libs/sdk-py (#8997)
• chore(deps): bump anyio from 4.13.0 to 4.14.2 in /libs/cli (#8998)
• chore(deps): bump anyio from 4.12.1 to 4.14.2 in /libs/sdk-py (#8994)
• feat(langgraph): add response_schema to interrupt() (#8886)
• chore(deps): bump the minor-and-patch group across 1 directory with 7 updates (#8779)
• chore(deps): bump websockets from 16.0 to 16.1.1 in /libs/sdk-py in the major group (#8781)

Commits

• 98c369a 0.4.9
• c354402 If FuturesDict callback has been GCed, don't call it
• 3c79812 docs: remove usage of StateGraph(dict) (#4967)
• d7c364c Port step_timeout/GraphBubbleUp fix to v0
• c89fe4c 0.4.8
• 48fb91d Fix Command(graph=PARENT) when used together w checkpointer=True
• 89ce6ea Remove SchemaCoercionMapper
• 5602c29 prebuilt: release 0.2.2 (#4851)
• 19ca6b4 fix: post_model_hook should inject state + store into tool calls if necessa...
• a69860b Merge branch 'main' into fix-examples-link-readme
• Additional commits viewable in compare view

Updates langgraph-sdk from 0.4.4 to 0.4.6

Release notes

Sourced from langgraph-sdk's releases.

langgraph-sdk==0.4.9

Changes since sdk==0.4.8

• release(sdk-py): 0.4.9 (#9398)
• feat(sdk-py): add Priority for thread priority settings (#9392)
• chore(deps): remove precautionary third-party upper bounds (#9390)
• chore(deps): bump certifi from 2026.2.25 to 2026.10.19 in /libs/sdk-py (#9370)
• chore(deps-dev): bump dotenv from 17.4.2 to 18.0.4 in /libs/cli/js-examples in the major group (#9154)
• chore(deps-dev): bump the minor-and-patch group in /libs/prebuilt with 6 updates (#9150)

langgraph-sdk==0.4.8

Changes since sdk==0.4.7

• release(langgraph): 1.2.16 (#9334)
• release(sdk-py): 0.4.8 (#9335)
• fix(sdk-py): surface thread stream errors and stop retrying a rejected stream (#9317)
• release(prebuilt): 1.1.1 (#9316)

langgraph-sdk==0.4.7

Changes since sdk==0.4.6

• release(sdk-py): 0.4.7 (#9289)
• release(langgraph): 1.2.15 (#9283)
• fix(sdk-py): end a thread stream's run only on a root lifecycle event (#9228)
• fix: order delta channel replay by task path (#8544)
• release(langgraph): 1.2.14 (#9215)

langgraph-sdk==0.4.6

Changes since sdk==0.4.5

• release(sdk-py): 0.4.6 (#9214)
• fix(sdk-py): percent-encode thread_id and assistant_id in thread stream requests (#9213)
• release(langgraph): 1.2.13 (#9205)
• chore(deps): bump the minor-and-patch group in /libs/sdk-py with 5 updates (#9149)
• chore(deps): bump urllib3 from 2.7.0 to 2.8.0 in /libs/sdk-py (#9134)

langgraph-sdk==0.4.5

Changes since sdk==0.4.4

• release(sdk-py): 0.4.5 (#8988)
• release(langgraph): 1.2.12 (#8987)
• chore(deps): bump anyio from 4.14.2 to 4.15.1 in /libs/sdk-py (#8997)
• chore(deps): bump anyio from 4.13.0 to 4.14.2 in /libs/cli (#8998)
• chore(deps): bump anyio from 4.12.1 to 4.14.2 in /libs/sdk-py (#8994)
• feat(langgraph): add response_schema to interrupt() (#8886)
• chore(deps): bump the minor-and-patch group across 1 directory with 7 updates (#8779)
• chore(deps): bump websockets from 16.0 to 16.1.1 in /libs/sdk-py in the major group (#8781)

Commits

• 98c369a 0.4.9
• c354402 If FuturesDict callback has been GCed, don't call it
• 3c79812 docs: remove usage of StateGraph(dict) (#4967)
• d7c364c Port step_timeout/GraphBubbleUp fix to v0
• c89fe4c 0.4.8
• 48fb91d Fix Command(graph=PARENT) when used together w checkpointer=True
• 89ce6ea Remove SchemaCoercionMapper
• 5602c29 prebuilt: release 0.2.2 (#4851)
• 19ca6b4 fix: post_model_hook should inject state + store into tool calls if necessa...
• a69860b Merge branch 'main' into fix-examples-link-readme
• Additional commits viewable in compare view

Updates litellm from 1.88.6 to 1.100.4

Release notes

Sourced from litellm's releases.

v1.100.4

Verify Docker Image Signature

All LiteLLM Docker images are signed with cosign. Every release is signed with the same key introduced in commit 0112e53.

Verify using the pinned commit hash (recommended):

A commit hash is cryptographically immutable, so this is the strongest way to ensure you are using the original signing key:

cosign verify \
  --key https://raw.githubusercontent.com/BerriAI/litellm/0112e53046018d726492c814b3644b7d376029d0/cosign.pub \
  ghcr.io/berriai/litellm:v1.100.4

Verify using the release tag (convenience):

Tags are protected in this repository and resolve to the same key. This option is easier to read but relies on tag protection rules:

cosign verify \
  --key https://raw.githubusercontent.com/BerriAI/litellm/v1.100.4/cosign.pub \
  ghcr.io/berriai/litellm:v1.100.4

Expected output:

The following checks were performed on each of these signatures:
  - The cosign claims were validated
  - The signatures were verified against the specified public key

---

Full Changelog: BerriAI/litellm@v1.100.3...v1.100.4

v1.100.3

Verify Docker Image Signature

All LiteLLM Docker images are signed with cosign. Every release is signed with the same key introduced in commit 0112e53.

Verify using the pinned commit hash (recommended):

A commit hash is cryptographically immutable, so this is the strongest way to ensure you are using the original signing key:

cosign verify \
  --key https://raw.githubusercontent.com/BerriAI/litellm/0112e53046018d726492c814b3644b7d376029d0/cosign.pub \
  ghcr.io/berriai/litellm:v1.100.3

... (truncated)

Commits

• 883282f Merge pull request #10 from BerriAI/litellm_session_token_1_100_x
• 241abae chore(lint): scope a TRY004 suppression to the bearer-token salt key check
• f7cd90f refactor(auth): bind UI/CLI session tokens to their own AES-GCM context
• bdff5cb Merge pull request #9 from BerriAI/litellm_bump_1_100_4
• cd6eb10 bump: litellm 1.100.3 -> 1.100.4
• 385266c Merge pull request #43132 from BerriAI/litellm_backport_1_100_x_gpt6_budget_0924
• 04fcee8 chore: refresh uv.lock for 1.100.3
• 5651c5a bump: version 1.100.2 → 1.100.3
• 78be1b7 chore(deps): bump soupsieve to 2.9
• 559dce5 chore(deps): bump pypdf to 6.16.1
• Additional commits viewable in compare view

Updates nltk from 3.10.3 to 3.10.4

Release notes

Sourced from nltk's releases.

v3.10.4

Version 3.10.4 2026-10-20

This release routes every file path, archive, download, URL fetch and external program through one sandbox that keeps reads and writes inside the trusted data directories, refuses path traversal, symlink escapes and decompression bombs, blocks requests to internal network addresses, and runs Java and other third-party tools only from trusted absolute locations with validated options and input. Pickled models now load through a restricted unpickler, XML and JSON parsing are hardened, and regular expressions, recursion and slow algorithms in the tokenizers, parsers, stemmers and corpus readers are bounded against denial-of-service input. Text that NLTK writes to the terminal, to CSV files, to the WordNet browser and to third-party tool input is sanitized against injection.

Security changes you may notice

Every refusal below raises with a message that starts with "Security Violation" and names the check, so a failure is easy to search for (PR #3877).

• Data directories (nltk.pathsec, nltk.data): corpora, models and every other resource are read and written only inside the directories listed in nltk.data.path. A path that leaves a data root, a symlink that points out of one, and a NUL byte or encoded traversal in a resource name are refused. A data root, or a directory on the way to a resource, that another account can write to is skipped with a warning naming the directory and the remedy. Keep private data in a private directory and add it to nltk.data.path; /tmp is not a data root. Model save and load methods (perceptron, maxent, named-entity chunker, Weka, crf, hunpos, Stanford) accept destinations inside a data root only (PR #3797, #3753, #3850, #3761, #3755, #3759, #3760, #3763, #3806, #3807, #3808, #3809, #3813, #3814, #3815, #3848, #3851, #3852, #3853, #3863, #3871, #3888, #3945, #3961, #3969, #3981)
• Downloader: downloaded package archives stay private to the installing account (0600). An install another account must read is extracted: a download made as root or outside the installing account's home extracts on its own, and nltk.download(..., extract=True) / python -m nltk.downloader --extract (or --no-extract) decide explicitly. This also unpacks the packages the index leaves zipped (wordnet, omw-1.4 ...); the extracted files are readable by every account and are found before the archive. find() names an archive it cannot read and says how to extract it instead of reporting it "not found". The downloader installs only into directories no other account can write to, treats an archive another account owns or can write to as stale and downloads it afresh, extracts only from an archive no other account could have changed since its checksum was verified, bounds the size of what it fetches, and refuses index entries and archive members that would write outside the package directory (PR #3929, #3804, #3850, #3778)
• Pickles: nltk.data.load(..., format="pickle") reconstructs plain data only; a pickle that names any class or function is refused. Model loaders that need classes use an explicit allowlist of audited globals, so a gadget such as os.system can never be reconstructed from a model file. chat80 shelve values load the same way (PR #3794, #3754, #3757, #3802, #3817, #3823, #3824)
• XML, JSON and YAML: nltk.xmlsec refuses any document that declares an entity or references an external one (billion-laughs, external-entity and DTD attacks) and bounds the tree depth, and every corpus XML view, the downloader index, Toolbox and internals parse through it. JSON resources load with a depth and size bound; YAML (the markdown corpus front matter and nltk.data.load(..., format="yaml")) loads through a bounded safe loader. Oversized or too deeply nested input raises ValueError naming the limit (PR #3754, #3805, #3828, #3933, #3972, #3974)
• Regular expressions (nltk.redos): every regular expression NLTK compiles, including one you pass to RegexpTokenizer, RegexpStemmer, RegexpParser, re_show, TokenSearcher.findall, tgrep, nltk.help tag-set lookups and the concordance and nemo GUIs, now goes through nltk.redos on the regex engine. A pattern longer than 100,000 characters, nested more than 100 deep, with more than 1,000 capturing groups or an excessive repetition product is refused with nltk.redos.error, a subclass of re.error; a match that runs longer than nltk.redos.DEFAULT_TIMEOUT (5 seconds) raises TimeoutError instead of hanging. Patterns keep re syntax; match objects are the regex engine's (PR #3825, #3829, #3830, #3831, #3832, #3833, #3834, #3835, #3836, #3837, #3838, #3839, #3840, #3841, #3842, #3843, #3844, #3845, #3846, #3796, #3801, #3906, #3907, #3908, #3910)
• Regular expressions made linear: the leading-run and re-anchoring patterns that a timeout cannot catch were rewritten or bounded in the word, Treebank, blankline, TextTiling, toktok and syllable tokenizers, the readline of corpus streams, the CoNLL SRL, TIMIT, senseval, pl196x, NKJP, Alpino, YCOE, IEER, ACE, VerbNet, reviews and Lin readers, relextract, the valuation parser, the CCG lexicon parser, dependency grammars and chomsky_normal_form, each verified on the real corpus (PR #3947, #3934, #3932, #3938, #3935, #3933, #3869, #3944, #3911, #3909, #3953, #3895)
• Size, depth and time bounds: trees deeper than nltk.tree.MAX_TREE_DEPTH (500), WordNet and other relation walks deeper than nltk.util.MAX_RECURSION_DEPTH (500), tgrep deeper than 50, Toolbox deeper than 500, dependency graphs deeper than 200, are refused with ValueError naming the limit rather than exhausting the stack, and the stemmers, distance metrics, skipgrams, parsers and grammar transforms run in linear or bounded time with identical output for legitimate input. chart_parse stops after nltk.parse.chart.DEFAULT_MAX_TIME (5 seconds of wall-clock, needed only for feature grammars; max_time=None disables it). Tree.repr no longer recurses, so a deep accepted tree prints (PR #3827, #3885, #3895, #3767, #3784, #3917, #3958, #3960, #3977)
• External tools and Java: a tool binary is resolved from an absolute path or a trusted search path only, never from the current directory; the binary, its directory and the model and data files handed to it must not be writable by another account (symlinked and multi-call executables such as a packaged Graphviz dot are supported). java() accepts a main class as the first argument only (no -jar, @​argfile or .java source file), validates its options against an allowlist, and loads jars only from a data root unless NLTK_ALLOW_UNSAFE_JARS=1 opts out with a warning. CoreNLP server options are allowlisted. Stanford, Malt, Senna, hunpos, Prover9, megam, TADM, Weka and crf wrappers validate their paths and the text they pipe to the tool against line and argument injection (PR #3772, #3771, #3975, #3743, #3782, #3788, #3768, #3798, #3887, #3858, #3950, #3951, #3812, #3816, #3868, #3894, #3941, #3850, #3925)
• Network: the downloader, nltk.data.load of a URL and the CHILDES reader fetch through pathsec.urlopen, which refuses addresses that are not globally routable (loopback, private, link-local and multicast, including tunnelled and obfuscated forms), pins the validated address for the connection, allows file:// with a local authority only, and refuses a proxied fetch unless NLTK_ALLOW_PROXIED_URLOPEN=1 (or nltk.pathsec.ALLOW_PROXIED_FETCH = True) asserts the proxy is trusted. The CoreNLP client talks to its local server with requests and is not affected (PR #3847, #3810, #3750, #3850)
• Terminal, CSV, DOT and HTML output: every print in the library goes through nltk.termsec.safe_print, which renders control characters, escape sequences and unbalanced bidi overrides from corpus text as visible \xNN escapes instead of letting them reach the terminal. The CSV files the twitter and sentiment helpers write neutralise formula-leading and control-sequence cells, AlignedSent DOT labels are escaped, the WordNet browser escapes corpus text, and nltk.data.load's verbose output no longer prints the full resource URL (PR #3914, #3915, #3937, #3946, #3931, #3930, #3856, #3902)
• Corpus stores and encodings: the PanLex Lite and chat80 sqlite stores open read-only on a pinned descriptor with their schema screened and a statement step budget, chat80 shelves are read by a key manifest, Toolbox SFM markers are sanitised, and a resource encoding that is not a text codec (bz2_codec and friends) is refused (PR #3961, #3964, #3959, #3888, #3800, #3962)
• Package contents: the wheel no longer ships nltk.test.unit (the attack harnesses, advisory probes and their fixtures), so pip install nltk is about half the size and import nltk.test.unit works from a source checkout or the sdist only. The doctests under nltk.test still ship (PR #3954)

Security test and CI infrastructure

• Attack and regression harnesses, advisory probes, the sandbox conftest fixtures, the pre-commit guards (no unsandboxed open, every regex through redos, every pickle through picklesec, every print through safe_print), load-invariant CPU-time timing rules, CI matrix and runner fixes, pinned third-party downloads, and the AUTHORS update (PR #3744, #3749, #3762, #3764, #3770, #3776, #3791, #3795, #3803, #3818, #3820, #3821, #3822, #3849, #3855, #3860, #3861, #3862, #3864, #3865, #3866, #3876, #3884, #3899, #3904, #3905, #3912, #3917, #3924, #3926, #3927, #3939, #3940, #3943, #3948, #3949, #3963, #3968, #3971, #3976, #3982, #3983, #3984, #3985)

Other changes

• Added RTL language syntactic tree visualization support (PR #3472)
• Fix #3394: Ensure punkt_tab is downloaded when punkt is requested (PR #3505)
• Show README.md as the PyPI long description (PR #3746)
• Add stopwords.words("english-extended") (PR #3747)
• Krippendorff's alpha: treat placeholder labels as missing data (#2865, #2732) (PR #3752)
• Fix shared defaults in chat80 Concept (PR #3773)
• Fix Java wrappers decoding str output from java() (universal_newlines) (PR #3777)
• Prevent IndexError in Hungarian stemmer on empty string (PR #3785)
• Isolate MTE tag filters per view (PR #3792)
• Fix newline in ellipsis tokens in TweetTokenizer (PR #3819)
• Isolate default WordNet reference relations (PR #3872)
• Fix resolution paths that cancel distinct literals (PR #3878)
• Fix UTF-8 text preprocessing in NKJP corpus reader (PR #3879)
• Remove shadowed FeatStruct._walk stub and preserve its docstring (PR #3893)
• Count all increasing pairs in RIBES kendall_tau (PR #3900)
• Fix the TweetTokenizer ZWJ emoji pattern capturing adjacent whitespace (PR #3913)
• Surface the CoreNLP server's reason for a non-2xx answer (PR #3942)
• Omit unaligned (NULL target) pairs from Alignment strings, so IBM model output prints (PR #3967)
• Fix DependencyGraph cycle detection, which returned False on every parsed graph (PR #3978)
• Show, range and draw an alignment with an unaligned pair on every surface (PR #3987)

Thanks to the following contributors to 3.10.4: Zhewen Tan, Yanhaoxi, Yazan Balawneh (Cystack.ps),

... (truncated)

Changelog

Sourced from nltk's changelog.

Version 3.10.5 (unreleased)

• nltk.data.load() refuses the pickle packages retired for CVE-2024-39705 (punkt, averaged_perceptron_tagger, averaged_perceptron_tagger_ru, maxent_ne_chunker, maxent_treebank_pos_tagger) instead of silently handing back their tab replacements: a load that reaches for one of their pickles, under any spelling of the name and in any format, raises ValueError before anything is read, naming the replacement to download and the call that loads it (for example nltk.download('punkt_tab'), then nltk.tokenize.PunktTokenizer('english')) (PR #3955)

Version 3.10.4 2026-10-20

This release routes every file path, archive, download, URL fetch and external program through one sandbox that keeps reads and writes inside the trusted data directories, refuses path traversal, symlink escapes and decompression bombs, blocks requests to internal network addresses, and runs Java and other third-party tools only from trusted absolute locations with validated options and input. Pickled models now load through a restricted unpickler, XML and JSON parsing are hardened, and regular expressions, recursion and slow algorithms in the tokenizers, parsers, stemmers and corpus readers are bounded against denial-of-service input. Text that NLTK writes to the terminal, to CSV files, to the WordNet browser and to third-party tool input is sanitized against injection.

Security changes you may notice

Every refusal below raises with a message that starts with "Security Violation" and names the check, so a failure is easy to search for (PR #3877).

• Data directories (nltk.pathsec, nltk.data): corpora, models and every other resource are read and written only inside the directories listed in nltk.data.path. A path that leaves a data root, a symlink that points out of one, and a NUL byte or encoded traversal in a resource name are refused. A data root, or a directory on the way to a resource, that another account can write to is skipped with a warning naming the directory and the remedy. Keep private data in a private directory and add it to nltk.data.path; /tmp is not a data root. Model save and load methods (perceptron, maxent, named-entity chunker, Weka, crf, hunpos, Stanford) accept destinations inside a data root only (PR #3797, #3753, #3850, #3761, #3755, #3759, #3760, #3763, #3806, #3807, #3808, #3809, #3813, #3814, #3815, #3848, #3851, #3852, #3853, #3863, #3871, #3888, #3945, #3961, #3969, #3981)
• Downloader: downloaded package archives stay private to the installing account (0600). An install another account must read is extracted: a download made as root or outside the installing account's home extracts on its own, and nltk.download(..., extract=True) / python -m nltk.downloader --extract (or --no-extract) decide explicitly. This also unpacks the packages the index leaves zipped (wordnet, omw-1.4 ...); the extracted files are readable by every account and are found before the archive. find() names an archive it cannot read and says how to extract it instead of reporting it "not found". The downloader installs only into directories no other account can write to, treats an archive another account owns or can write to as stale and downloads it afresh, extracts only from an archive no other account could have changed since its checksum was verified, bounds the size of what it fetches, and refuses index entries and archive members that would write outside the package directory (PR #3929, #3804, #3850, #3778)
• Pickles: nltk.data.load(..., format="pickle") reconstructs plain data only; a pickle that names any class or function is refused. Model loaders that need classes use an explicit allowlist of audited globals, so a gadget such as os.system can never be reconstructed from a model file. chat80 shelve values load the same way (PR #3794, #3754, #3757, #3802, #3817, #3823, #3824)
• XML, JSON and YAML: nltk.xmlsec refuses any document that declares an entity or references an external one (billion-laughs, external-entity and DTD attacks) and bounds the tree depth, and every corpus XML view, the downloader index, Toolbox and internals parse through it. JSON resources load with a depth and size bound; YAML (the markdown corpus front matter and nltk.data.load(..., format="yaml")) loads through a bounded safe loader. Oversized or too deeply nested input raises ValueError naming the limit (PR #3754, #3805, #3828, #3933, #3972, #3974)
• Regular expressions (nltk.redos): every regular expression NLTK compiles, including one you pass to RegexpTokenizer, RegexpStemmer, RegexpParser, re_show, TokenSearcher.findall, tgrep, nltk.help tag-set lookups and the concordance and nemo GUIs, now goes through nltk.redos on the regex engine. A pattern longer than 100,000 characters, nested more than 100 deep, with more than 1,000 capturing groups or an excessive repetition product is refused with nltk.redos.error, a subclass of re.error; a match that runs longer than nltk.redos.DEFAULT_TIMEOUT (5 seconds) raises TimeoutError instead of hanging. Patterns keep re syntax; match objects are the regex engine's (PR #3825, #3829, #3830, #3831, #3832, #3833, #3834, #3835, #3836, #3837, #3838, #3839, #3840, #3841, #3842, #3843, #3844, #3845, #3846, #3796, #3801, #3906, #3907, #3908, #3910)
• Regular expressions made linear: the leading-run and re-anchoring patterns that a timeout cannot catch were rewritten or bounded in the word, Treebank, blankline, TextTiling, toktok and syllable tokenizers, the readline of corpus streams, the CoNLL SRL, TIMIT, senseval, pl196x, NKJP, Alpino, YCOE, IEER, ACE, VerbNet, reviews and Lin readers, relextract, the valuation parser, the CCG lexicon parser, dependency grammars and chomsky_normal_form, each verified on the real corpus (PR #3947, #3934, #3932, #3938, #3935, #3933, #3869, #3944, #3911, #3909, #3953, #3895)
• Size, depth and time bounds: trees deeper than nltk.tree.MAX_TREE_DEPTH (500), WordNet and other relation walks deeper than nltk.util.MAX_RECURSION_DEPTH (500), tgrep deeper than 50, Toolbox deeper than 500, dependency graphs deeper than 200, are refused with ValueError naming the limit rather than exhausting the stack, and the stemmers, distance metrics, skipgrams, parsers and grammar transforms run in linear or bounded time with identical output for legitimate input. chart_parse stops after nltk.parse.chart.DEFAULT_MAX_TIME (5 seconds of wall-clock, needed only for feature grammars; max_time=None disables it). Tree.repr no longer recurses, so a deep accepted tree prints (PR #3827, #3885,

[github-actions]

posthog-python Compliance Report

Date: 2026-10-30T20:49:42.053668+00:00
Duration: 259450ms

✅ All Tests Passed!

121/121 tests passed

---

Capture_V1 Tests

✅ 95/95 tests passed

View Details

Test	Status	Duration
Endpoint And Method.Targets V1 Endpoint	✅	514ms
Endpoint And Method.Does Not Use Legacy Endpoints	✅	509ms
Required Headers.Has Authorization Bearer Header	✅	509ms
Required Headers.Has Content Type Json	✅	509ms
Required Headers.Has Posthog Sdk Info Format	✅	508ms
Required Headers.Has Posthog Attempt Header	✅	509ms
Required Headers.Has Posthog Request Id	✅	508ms
Required Headers.Has Posthog Request Timestamp	✅	509ms
Required Headers.Has User Agent	✅	509ms
Body Format.Body Has Created At And Batch	✅	508ms
Body Format.No Api Key In Body	✅	508ms
Body Format.No Sent At In Body	✅	509ms
Event Format.Event Has Required Root Fields	✅	508ms
Event Format.Event Uuid Is Valid	✅	509ms
Event Format.Event Timestamp Is Rfc3339	✅	508ms
Event Format.Non Utc Event Timestamp Is Converted To Utc	✅	518ms
Event Format.Distinct Id Is String	✅	508ms
Event Format.Distinct Id At Root Not Properties	✅	509ms
Event Format.Custom Properties Preserved	✅	509ms
Event Format.Set Properties Preserved	✅	508ms
Event Format.Set Once Properties Preserved	✅	509ms
Event Format.Groups Properties Preserved	✅	509ms
Event Format.Sdk Generates Uuid If Not Provided	✅	509ms
Event Format.Event Has Required Root Fields Batch	✅	511ms
Event Format.Event Uuid Is Valid Batch	✅	511ms
Event Format.Event Timestamp Is Rfc3339 Batch	✅	511ms
Event Format.Distinct Id Is String Batch	✅	511ms
Event Format.Distinct Id At Root Not Properties Batch	✅	511ms
Event Format.Custom Properties Preserved Batch	✅	511ms
Event Format.Set Properties Preserved Batch	✅	511ms
Event Format.Set Once Properties Preserved Batch	✅	512ms
Event Format.Groups Properties Preserved Batch	✅	511ms
Event Format.Sdk Generates Uuid If Not Provided Batch	✅	511ms
Batch Behavior.Multiple Events In Single Batch	✅	515ms
Batch Behavior.Batch Envelope Smoke	✅	512ms
Batch Behavior.Flush With No Events Sends Nothing	✅	506ms
Batch Behavior.Flush At Triggers Batch	✅	1009ms
Batch Behavior.Created At Reflects Batch Creation Time	✅	509ms
Deduplication.Generates Unique Uuids	✅	514ms
Deduplication.Different Events Same Content Different Uuids	✅	511ms
Deduplication.Preserves Uuid On Retry	✅	6512ms
Deduplication.Preserves Timestamp On Retry	✅	6518ms
Deduplication.Preserves Uuid And Timestamp On Batch Retry	✅	6516ms
Deduplication.No Duplicate Events In Batch	✅	514ms
Header Behavior On Retry.Attempt Header Starts At One	✅	509ms
Header Behavior On Retry.Attempt Header Increments On Retry	✅	13525ms
Header Behavior On Retry.Request Id Preserved On Retry	✅	6517ms
Header Behavior On Retry.Different Requests Have Different Request Ids	✅	3016ms
Header Behavior On Retry.Request Timestamp Changes On Retry	✅	6518ms
Response Format Validation.Success Response Has Uuid Keyed Results	✅	508ms
Response Format Validation.Success Response Has Ok For Each Event	✅	512ms
Response Format Validation.Success No Retry After When All Ok	✅	510ms
Response Format Validation.Success Retry After Present When Retry Events	✅	1513ms
Response Format Validation.Success No Retry After When Drop Only	✅	510ms
Response Format Validation.Response Echoes Request Id	✅	508ms
Retry Behavior.Retries On 408	✅	6513ms
Retry Behavior.Retries On 500	✅	6517ms
Retry Behavior.Retries On 503	✅	8516ms
Retry Behavior.Retries On 504	✅	6517ms
Retry Behavior.Retryable Errors Have Retry After	✅	3515ms
Retry Behavior.Respects Retry After On Retryable Error	✅	11521ms
Retry Behavior.Does Not Retry On 400	✅	2510ms
Retry Behavior.Does Not Retry On 401	✅	2512ms
Retry Behavior.Does Not Retry On 402	✅	2511ms
Retry Behavior.Does Not Retry On 413	✅	2512ms
Retry Behavior.Does Not Retry On 415	✅	2512ms
Retry Behavior.Non Retryable Errors Have No Retry After	✅	2510ms
Retry Behavior.Implements Backoff	✅	22533ms
Retry Behavior.Max Retries Respected	✅	22532ms
Partial Batch Handling.Handles 200 Full Success	✅	2511ms
Partial Batch Handling.Handles 200 With All Ok	✅	3512ms
Partial Batch Handling.Does Not Retry Dropped Events	✅	3512ms
Partial Batch Handling.Does Not Retry Limited Events	✅	3513ms
Partial Batch Handling.Prunes Ok Events On Partial Retry	✅	6517ms
Partial Batch Handling.Prunes Dropped Events On Partial Retry	✅	6520ms
Partial Batch Handling.Retries Only Retry Events From Partial	✅	6520ms
Partial Batch Handling.Partial Retry Preserves Uuids	✅	6515ms
Partial Batch Handling.Partial Retry Attempt Header Increments	✅	6521ms
Partial Batch Handling.Partial Retry Request Id Preserved	✅	6519ms
Partial Batch Handling.Respects Retry After On Partial	✅	8515ms
Partial Batch Handling.Unknown Result Treated As Terminal	✅	3514ms
Partial Batch Handling.Mixed Ok Drop Limited No Retry	✅	3514ms
Compression.Sends Gzip Content Encoding	✅	509ms
Compression.No Content Encoding When Disabled	✅	509ms
Compression.Compressed Body Is Decompressible	✅	508ms
Error Handling.Does Not Retry On Unknown 4Xx	✅	2511ms
Event Options.Cookieless Mode Override	✅	509ms
Event Options.Disable Skew Correction Override	✅	508ms
Event Options.Process Person Profile Override	✅	509ms
Event Options.Product Tour Id Override	✅	509ms
Event Options.Unset Options Omitted	✅	508ms
Event Options.Options Override In Batch	✅	511ms
Geoip And Historical Migration.Geoip Disable Injected Into Properties	✅	509ms
Geoip And Historical Migration.Historical Migration Set In Body	✅	509ms
Geoip And Historical Migration.Historical Migration Absent By Default	✅	508ms

Capture_Ai Tests

✅ 5/5 tests passed

View Details

Test	Status	Duration
Routing.Capture Ai Posts To Ai Endpoint	✅	509ms
Routing.Capture Does Not Reroute Ai Named Events	✅	509ms
Identity.Capture Ai Event Has Uuid	✅	509ms
Identity.Capture Ai Keeps Supplied Uuid	✅	508ms
Timestamp Format.Non Utc Event Timestamp Is Converted To Utc	✅	509ms

Feature_Flags Tests

✅ 17/17 tests passed

View Details

Test	Status	Duration
Request Payload.Request With Person Properties Device Id	✅	10ms
Request Payload.Flags Request Uses V2 Query Param	✅	7ms
Request Payload.Flags Request Hits Flags Path Not Decide	✅	7ms
Request Payload.Flags Request Omits Authorization Header	✅	8ms
Request Payload.Token In Flags Body Matches Init	✅	7ms
Request Payload.Groups Round Trip	✅	7ms
Request Payload.Groups Default To Empty Object	✅	8ms
Request Payload.Disable Geoip False Propagates As Geoip Disable False	✅	7ms
Request Payload.Disable Geoip Omitted Defaults To False	✅	8ms
Request Payload.Flag Keys To Evaluate Contains Only Requested Key	✅	7ms
Request Lifecycle.No Flags Request On Init Alone	✅	2ms
Request Lifecycle.No Flags Request On Normal Capture	✅	508ms
Request Lifecycle.Two Flag Calls Produce Two Remote Requests	✅	11ms
Request Lifecycle.Mock Response Value Is Returned To Caller	✅	8ms
Retry Behavior.Retries Flags On 502	✅	311ms
Retry Behavior.Retries Flags On 504	✅	312ms
Side Effect Events.Get Feature Flag Captures Feature Flag Called Event	✅	510ms

Feature_Flags_Local_Evaluation Tests

✅ 4/4 tests passed

View Details

Test	Status	Duration
Versioned Boolean Matching.Matching Version Missing	✅	54ms
Versioned Boolean Matching.Matching Version 1	✅	52ms
Versioned Boolean Matching.Matching Version 2	✅	51ms
Versioned Boolean Matching.Version Only Reload 1 2 1 2 Missing	✅	29ms