PyPI/nltk CVE-2026-63311: medium 5.3, EPSS 0.33%
NLTK before 3.10.0 (affected versions <= 3.9.4) contains a server-side request forgery (SSRF) vulnerability in the validate_network_url() function in nltk/pathsec.py. The _resolve_hostname() helper ca
Action: Upgrade nltk to 3.10.0 or later.
pip install nltk==3.10.0Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 3.10.0 | - |
Fixed versions
| 3.10.0 |
Sources
- osv: PYSEC-2026-3723
- nvd: CVE-2026-63311
- https://www.vulncheck.com/advisories/nltk-before-ssrf-via-dns-resolution-failure
- https://github.com/nltk/nltk/security/advisories/GHSA-3gqm-fcw5-w839
CVE-2026-63311 · published · modified · JSON