PyPI/nltk CVE-2025-71408: unknown, EPSS 0.27%
NLTK (Natural Language Toolkit) before version 3.9.3 contains an eval injection vulnerability in the nltk.collocations module that allows an attacker who controls command-line arguments to execute arb
Action: Upgrade nltk to 3.9.3 or later.
pip install nltk==3.9.3Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 3.9.3 | - |
Fixed versions
| 3.9.3 |
Sources
- osv: PYSEC-2026-3657
- https://github.com/nltk/nltk/releases/tag/3.9.3
- https://github.com/nltk/nltk/commit/66f14096d952ec8f04934f515e027534bd4eb0ac
- https://github.com/nltk/nltk/pull/3465
- https://www.vulncheck.com/advisories/nltk-eval-injection-via-collocations-py-command-line-arguments
- https://aydinnyunus.github.io/2026/06/07/command-injection-nltk-collocations-eval/
- https://github.com/advisories/GHSA-848c-c2cx-j7qx
CVE-2025-71408 · published · modified · JSON