{"action":"Upgrade nltk to 3.9.4 or later.","affected":[{"fixed":"3.9.4","introduced":"0"}],"component":"nltk","cve_ids":["CVE-2026-33231"],"ecosystem":"PyPI","epss":0.01236,"exploited":false,"fixed_versions":["3.9.4"],"ghsa_id":"GHSA-jm6w-m3j8-898g","id":"tcs_01M5KGY8XCPNDDPAB6Y8DB7JF2","modified_at":"2026-07-13T07:15:50.554652709Z","published_at":"2026-03-20T23:16:46.850Z","references":["https://osv.dev/vulnerability/PYSEC-2026-2236","https://access.redhat.com/security/cve/CVE-2026-33231","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33231.json","https://access.redhat.com/errata/RHSA-2026:19712","https://access.redhat.com/errata/RHSA-2026:24977","https://access.redhat.com/errata/RHSA-2026:37275","https://bugzilla.redhat.com/show_bug.cgi?id=2449836","https://github.com/nltk/nltk/commit/bbaae83db86a0f49e00f5b0db44a7254c268de9b","https://github.com/nltk/nltk/security/advisories/GHSA-jm6w-m3j8-898g"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"PYSEC-2026-2236","url":"https://osv.dev/vulnerability/PYSEC-2026-2236"}],"summary":"NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, `nlt"}