{"action":"Upgrade nltk to 3.10.3 or later.","affected":[{"fixed":"3.10.3","introduced":"0"}],"component":"nltk","cve_ids":["CVE-2026-81727"],"ecosystem":"PyPI","epss":0.00187,"exploited":false,"fixed_versions":["3.10.3"],"ghsa_id":"GHSA-f794-5jv7-7672","id":"tcs_01M5KFEP5RT6CAKG50VZ33CH41","modified_at":"2026-09-10T03:51:15.298800760Z","published_at":"2026-09-02T14:35:41Z","references":["https://osv.dev/vulnerability/GHSA-f794-5jv7-7672","https://github.com/nltk/nltk/security/advisories/GHSA-f794-5jv7-7672","https://nvd.nist.gov/vuln/detail/CVE-2026-81727","https://github.com/nltk/nltk/pull/3797","https://github.com/nltk/nltk/commit/9e6d5f05902b9aaa1221a0a565448d17a9c9b3e8","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-2026-3741.yaml","https://www.vulncheck.com/advisories/nltk-before-3.10.3-hardlink-file-overwrite-via-downloader"],"severity":{"label":"high","score":7.1},"sources":[{"source":"osv","source_id":"GHSA-f794-5jv7-7672","url":"https://osv.dev/vulnerability/GHSA-f794-5jv7-7672"}],"summary":"NLTK: Downloader.download follows hardlinks and overwrites outside-root files"}