{"action":"Upgrade nltk to 3.10.3 or later.","affected":[{"fixed":"3.10.3","introduced":"3.10.0"}],"component":"nltk","cve_ids":["CVE-2026-71513"],"ecosystem":"PyPI","epss":0.01097,"exploited":false,"fixed_versions":["3.10.3"],"ghsa_id":"GHSA-5gh2-94qg-qppq","id":"tcs_01M5KF0Y8JGKBNQT0Z0FKXP48M","modified_at":"2026-09-10T12:25:33.900504877Z","published_at":"2026-08-22T15:31:03Z","references":["https://osv.dev/vulnerability/GHSA-5gh2-94qg-qppq","https://nvd.nist.gov/vuln/detail/CVE-2026-71513","https://github.com/nltk/nltk/commit/c3e37113742a1ebeeb4f2ca58941f320f98805ea","https://github.com/nltk/nltk","https://github.com/nltk/nltk/blob/v3.10.2/nltk/picklesec.py#L119-L124","https://www.vulncheck.com/advisories/nltk-through-remote-code-execution-via-allowlistunpickler-dotted-name-bypass"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"GHSA-5gh2-94qg-qppq","url":"https://osv.dev/vulnerability/GHSA-5gh2-94qg-qppq"}],"summary":"NLTK AllowlistUnpickler dotted-name validation bypass allows remote code execution"}