nltk
Natural Language Toolkit
Why this rank:Strong adoptionRecent releaseHealthy release cadence
Description
The Natural Language Toolkit (NLTK) is a Python package for natural language processing. NLTK requires Python 3.10, 3.11, 3.12, 3.13, or 3.14.
Release History
| Version | Changes | Urgency | Date |
|---|---|---|---|
| v3.10.3 | Version 3.10.3 2026-08-12 * docs: wrap Chat-80 HOWTO output * Sandbox Stanford JAR execution to nltk_data directories * Harden path-traversal / file-I/O sandbox: close write-side symlink TOCTOU + shared-temp squat, lock the cluster with a living audit (CWE-22/59/377) * Extend algorithmic-complexity DoS hardening: repo-wide sweep + two-string distances (CWE-407/CWE-400) * Bound unbounded-work DoS in parsers and grammar transforms (CWE-407/674/835) * fix(security): sandbox MaltParser's Java execu | High | 8/13/2026 |
| v3.10.2 | Version 3.10.2 2026-08-05 * Remove inisec.py and document PYTHONSAFEPATH instead * Skip draft step in release workflow * Fix symlink escape in FramenetCorpusReader (CWE-59) * Guard tempfile.gettempdir() when building pathsec allowed roots * add tests for transitive_closure Thanks to the following contributors to 3.10.2: Litesh Ghute, Eric Kafe, Evan Kiefer, tarann26 and Rav Singh Chandan | High | 8/5/2026 |
| v3.10.1-rc1 | ## What's Changed * Fix perfect-agreement edge cases in agreement metrics by @Muhtasim-Munif-Fahim in https://github.com/nltk/nltk/pull/3608 * fix(security): prevent ReDoS in TextTilingTokenizer paragraph-break regex (CWE-1333) by @LinZiyuu in https://github.com/nltk/nltk/pull/3612 * fix(security): prevent ReDoS in SensevalCorpusReader _fixXML (CWE-400) by @LinZiyuu in https://github.com/nltk/nltk/pull/3614 * fix(security): resolve relative MaltParser dir via MALT_PARSER, not the CWD (CWE-42 | High | 7/27/2026 |
| v3.10.0-rc1 | ## What's Changed * CHILDES corpus reader: lazy loading (fixes #1340) by @nschneid in https://github.com/nltk/nltk/pull/1341 * Stanseg by @casperlehmann in https://github.com/nltk/nltk/pull/1350 * Add optional CCG semantics computation by @tanin47 in https://github.com/nltk/nltk/pull/1321 * address of free software foundation updated by @Lightyagami1 in https://github.com/nltk/nltk/pull/1347 * Added a verification for empty tokens by @gnardari in https://github.com/nltk/nltk/pull/1353 * us | High | 6/11/2026 |
| develop@2026-06-06 | Latest activity on develop branch | High | 6/6/2026 |
| 3.9.4 | Imported from PyPI (3.9.4) | Low | 4/21/2026 |
| 3.9.3 | Tag 3.9.3 | Low | 2/24/2026 |
| v3.9.2 | Tag v3.9.2 | Low | 10/1/2025 |
| 3.9.2 | Tag 3.9.2 | Low | 10/1/2025 |
| 3.9.1 | Tag 3.9.1 | Low | 8/18/2024 |
| 3.9 | Tag 3.9 | Low | 8/18/2024 |
| 3.8.2 | Tag 3.8.2 | Low | 8/9/2024 |
| 3.8.1 | Tag 3.8.1 | Low | 1/2/2023 |
| 3.8 | Tag 3.8 | Low | 12/12/2022 |
| 3.7 | Tag 3.7 | Low | 2/9/2022 |
| 3.6.7 | Tag 3.6.7 | Low | 12/28/2021 |
| 3.6.6 | Tag 3.6.6 | Low | 12/21/2021 |
| 3.6.5 | Tag 3.6.5 | Low | 10/11/2021 |
| 3.6.4 | Tag 3.6.4 | Low | 10/1/2021 |
| 3.6.3 | Tag 3.6.3 | Low | 9/19/2021 |
| 3.6.2 | Tag 3.6.2 | Low | 4/20/2021 |
| 3.6.1 | Tag 3.6.1 | Low | 4/7/2021 |
| 3.6 | Tag 3.6 | Low | 4/7/2021 |
| 3.5 | Tag 3.5 | Low | 4/12/2020 |
| 3.5b1 | Tag 3.5b1 | Low | 3/8/2020 |
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