{"action":"Upgrade nltk to 3.10.0 or later.","affected":[{"fixed":"3.10.0","introduced":"0"}],"component":"nltk","cve_ids":["CVE-2026-12075"],"ecosystem":"PyPI","exploited":false,"fixed_versions":["3.10.0"],"ghsa_id":"GHSA-qvv7-cg9c-w4x3","id":"tcs_01M5KH65S51HGX5259CC6JQA9J","modified_at":"2026-08-04T14:30:27.356191660Z","published_at":"2026-08-04T11:34:46.082677Z","references":["https://osv.dev/vulnerability/PYSEC-2026-3583","https://github.com/nltk/nltk/security/advisories/GHSA-qvv7-cg9c-w4x3","https://github.com/nltk/nltk","https://pypi.org/project/nltk","https://github.com/advisories/GHSA-qvv7-cg9c-w4x3","https://nvd.nist.gov/vuln/detail/CVE-2026-12075"],"severity":{"label":"high","score":8.6},"sources":[{"source":"osv","source_id":"PYSEC-2026-3583","url":"https://osv.dev/vulnerability/PYSEC-2026-3583"}],"summary":"Natural Language Toolkit (NLTK): DNS-rebinding SSRF filter bypass in nltk.pathsec.urlopen (nltk.download / nltk.data.load) defeats ENFORCE mode"}