{"action":"Upgrade nltk to 3.10.0 or later.","affected":[{"fixed":"3.10.0","introduced":"0"}],"component":"nltk","cve_ids":["CVE-2026-12243"],"ecosystem":"PyPI","exploited":false,"fixed_versions":["3.10.0"],"ghsa_id":"GHSA-m42h-3232-vpv3","id":"tcs_01M5KFQ4APTFR8ESEWE43Q0EX9","modified_at":"2026-08-13T21:10:37.370031268Z","published_at":"2026-08-13T20:45:05Z","references":["https://osv.dev/vulnerability/GHSA-m42h-3232-vpv3","https://github.com/nltk/nltk/security/advisories/GHSA-m42h-3232-vpv3","https://nvd.nist.gov/vuln/detail/CVE-2026-12243","https://github.com/nltk/nltk/issues/3504","https://github.com/nltk/nltk/pull/3522","https://github.com/nltk/nltk/commit/aec4fce1b84ad725b8975f7365b23a4f626572a9","https://github.com/nltk/nltk","https://github.com/pypa/advisory-database/tree/main/vulns/nltk/PYSEC-2026-597.yaml","https://huntr.com/bounties/39aa9354-54ca-4e77-96da-580eb1fe6ed1","https://securityinfinity.com/research/path-traversal-in-nltks-nltk-data-load-via-percent-encoded-sequences"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-m42h-3232-vpv3","url":"https://osv.dev/vulnerability/GHSA-m42h-3232-vpv3"}],"summary":"nltk: Arbitrary File Read via Path Traversal in nltk.data.load() through Percent-Encoded Sequences"}