{"action":"Upgrade nltk to 3.9.4 or later.","affected":[{"fixed":"3.9.4","introduced":"0"}],"component":"nltk","cve_ids":["CVE-2026-12252"],"ecosystem":"PyPI","epss":0.00195,"exploited":false,"fixed_versions":["3.9.4"],"ghsa_id":"GHSA-9r6g-266r-89x4","id":"tcs_01M5KFBF4FA7TKX1QEW9ASN44M","modified_at":"2026-10-02T18:55:37.071322102Z","published_at":"2026-07-04T03:31:03Z","references":["https://osv.dev/vulnerability/GHSA-9r6g-266r-89x4","https://nvd.nist.gov/vuln/detail/CVE-2026-12252","https://github.com/nltk/nltk/pull/3743","https://github.com/nltk/nltk/commit/006f4b83d430147b067b81e2cddd226d6fa405c8","https://github.com/nltk/nltk/commit/24777f0cb8c33ed2839d16e0f8169a3c312a6806","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-2026-2085.yaml","https://huntr.com/bounties/f5c93982-0cc9-4e2e-bb85-1b6ab29a2efb"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"GHSA-9r6g-266r-89x4","url":"https://osv.dev/vulnerability/GHSA-9r6g-266r-89x4"}],"summary":"NLTK Stanford wrapper classes execute untrusted JAR files without verification"}