PyPI/nltk CVE-2026-12259, CVE-2026-63310: medium 6.5
NLTK before 3.9.3 fails to verify file integrity after downloading packages and before extraction in the downloader module. Attackers can perform man-in-the-middle attacks or DNS poisoning to inject m
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-2026-3729
- https://www.vulncheck.com/advisories/nltk-before-missing-post-download-integrity-verification
- https://github.com/nltk/nltk/security/advisories/GHSA-5wp5-5229-5g6q
- https://github.com/advisories/GHSA-5wp5-5229-5g6q
CVE-2026-12259, CVE-2026-63310 · published · modified · JSON