{"action":"Upgrade nltk to 3.10.0 or later.","affected":[{"fixed":"3.10.0","introduced":"0"}],"component":"nltk","cve_ids":["CVE-2026-78683"],"ecosystem":"PyPI","epss":0.0051,"exploited":false,"fixed_versions":["3.10.0"],"ghsa_id":"GHSA-rhp5-r9x4-f5g2","id":"tcs_01M5KFY4ASGC63KXCDPV59CGQV","modified_at":"2026-09-08T16:45:04.193165862Z","published_at":"2026-09-08T16:41:11Z","references":["https://osv.dev/vulnerability/GHSA-rhp5-r9x4-f5g2","https://github.com/nltk/nltk/security/advisories/GHSA-rhp5-r9x4-f5g2","https://nvd.nist.gov/vuln/detail/CVE-2026-78683","https://github.com/nltk/nltk/pull/3631","https://github.com/nltk/nltk/commit/f26b3753038d937b68145daf15e9636f8451053c","https://github.com/nltk/nltk","https://github.com/nltk/nltk/releases/tag/v3.10.0","https://github.com/pypa/advisory-database/tree/main/vulns/nltk/PYSEC-2026-3734.yaml","https://www.vulncheck.com/advisories/nltk-before-remote-code-execution-via-unsafe-pickle-deserialization"],"severity":{"label":"critical"},"sources":[{"source":"osv","source_id":"GHSA-rhp5-r9x4-f5g2","url":"https://osv.dev/vulnerability/GHSA-rhp5-r9x4-f5g2"}],"summary":"NLTK: Unsafe Pickle Deserialization in TransitionParser Allows Remote Code Execution"}