{"action":"Upgrade nltk to 3.10.0 or later.","affected":[{"fixed":"3.10.0","introduced":"0"}],"component":"nltk","cve_ids":["CVE-2026-12372"],"ecosystem":"PyPI","epss":0.0026,"exploited":false,"fixed_versions":["3.10.0"],"ghsa_id":"GHSA-2jhm-w3mp-jcwr","id":"tcs_01M5KESRCHV07ZBA70ARK0GEHT","modified_at":"2026-10-02T23:40:41.750758387Z","published_at":"2026-08-10T00:31:42Z","references":["https://osv.dev/vulnerability/GHSA-2jhm-w3mp-jcwr","https://nvd.nist.gov/vuln/detail/CVE-2026-12372","https://github.com/nltk/nltk/commit/4a820afa58810cd05049b6c6eae306694d6cfe65","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-2026-3955.yaml","https://huntr.com/bounties/2911b643-571c-42e4-b0c2-9a1fa6f491db"],"severity":{"label":"low","score":3.7},"sources":[{"source":"osv","source_id":"GHSA-2jhm-w3mp-jcwr","url":"https://osv.dev/vulnerability/GHSA-2jhm-w3mp-jcwr"}],"summary":"NLTK network URL validation permits SSRF to RFC 6598 shared-address-space hosts"}