{"action":"Upgrade nltk to 3.10.0 or later.","affected":[{"fixed":"3.10.0","introduced":"0"}],"component":"nltk","cve_ids":["CVE-2026-63312"],"ecosystem":"PyPI","epss":0.00651,"exploited":false,"fixed_versions":["3.10.0"],"ghsa_id":"GHSA-x5ph-mj9p-rfr8","id":"tcs_01M5KG3HWEX8M0BNWWBG9TWR18","modified_at":"2026-09-08T15:46:56.600781081Z","published_at":"2026-09-08T15:27:32Z","references":["https://osv.dev/vulnerability/GHSA-x5ph-mj9p-rfr8","https://github.com/nltk/nltk/security/advisories/GHSA-x5ph-mj9p-rfr8","https://nvd.nist.gov/vuln/detail/CVE-2026-63312","https://github.com/nltk/nltk/pull/3588","https://github.com/nltk/nltk/commit/674ea75accdf08eca3782dee0a9c4ed7e0d0025b","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-2026-3730.yaml","https://www.vulncheck.com/advisories/nltk-streambackedcorpusview-bypasses-pathsec-enforce-arbitrary-file-read"],"severity":{"label":"high"},"sources":[{"source":"osv","source_id":"GHSA-x5ph-mj9p-rfr8","url":"https://osv.dev/vulnerability/GHSA-x5ph-mj9p-rfr8"}],"summary":"NLTK: StreamBackedCorpusView Bypasses pathsec.ENFORCE - Arbitrary Local File Read"}