NLTK: Allowlisted pickle loaders still permit code execution in current source
Critical vendor advisory
CVE-2026-79657
Summary
NLTK: Allowlisted pickle loaders still permit code execution in current source
Why it matters
GitHub has published a reviewed security advisory for nltk. Prioritize it with other application dependency updates, especially because EPSS places it in the 67% percentile.
Operator check
Check whether nltk is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 9.3. EPSS probability: 1.2%; percentile: 67%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.