{"action":"Upgrade nltk to 3.10.3 or later.","affected":[{"fixed":"3.10.3","introduced":"0"}],"component":"nltk","cve_ids":["CVE-2026-79657"],"ecosystem":"PyPI","epss":0.01267,"exploited":false,"fixed_versions":["3.10.3"],"ghsa_id":"GHSA-x99w-6fgc-pmfw","id":"tcs_01M5KG3XDXNZ8TJT3110XC6SCP","modified_at":"2026-09-08T17:00:04.111203038Z","published_at":"2026-09-08T16:42:57Z","references":["https://osv.dev/vulnerability/GHSA-x99w-6fgc-pmfw","https://github.com/nltk/nltk/security/advisories/GHSA-x99w-6fgc-pmfw","https://nvd.nist.gov/vuln/detail/CVE-2026-79657","https://github.com/nltk/nltk/commit/c3e37113742a1ebeeb4f2ca58941f320f98805ea","https://github.com/nltk/nltk","https://github.com/nltk/nltk/releases/tag/v3.10.3","https://github.com/pypa/advisory-database/tree/main/vulns/nltk/PYSEC-2026-3735.yaml","https://www.vulncheck.com/advisories/nltk-before-3.10.3-remote-code-execution-via-unsafe-pickle-deserialization"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"GHSA-x99w-6fgc-pmfw","url":"https://osv.dev/vulnerability/GHSA-x99w-6fgc-pmfw"},{"source":"nvd","source_id":"CVE-2026-79657","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-79657"}],"summary":"NLTK: Allowlisted pickle loaders still permit code execution in current source"}