{"action":"Upgrade nltk to 3.9.4 or later.","affected":[{"fixed":"3.9.4","introduced":"0"}],"component":"nltk","cve_ids":["CVE-2026-70626"],"ecosystem":"PyPI","epss":0.002,"exploited":false,"fixed_versions":["3.9.4"],"ghsa_id":"GHSA-r6gq-whwq-mvg9","id":"tcs_01M5KFXASDXCSDD9J9WVQ5JJ12","modified_at":"2026-09-08T15:30:07.726015360Z","published_at":"2026-09-08T15:26:47Z","references":["https://osv.dev/vulnerability/GHSA-r6gq-whwq-mvg9","https://github.com/nltk/nltk/security/advisories/GHSA-r6gq-whwq-mvg9","https://nvd.nist.gov/vuln/detail/CVE-2026-70626","https://github.com/nltk/nltk/pull/3522","https://github.com/nltk/nltk/commit/1b0e519e2324bc1a273d56edee63e44d0ad85b48","https://github.com/nltk/nltk","https://github.com/nltk/nltk/releases/tag/3.9.4","https://github.com/pypa/advisory-database/tree/main/vulns/nltk/PYSEC-2026-3732.yaml","https://www.vulncheck.com/advisories/nltk-before-symlink-escape-via-corpusreader"],"severity":{"label":"medium","score":6.2},"sources":[{"source":"osv","source_id":"GHSA-r6gq-whwq-mvg9","url":"https://osv.dev/vulnerability/GHSA-r6gq-whwq-mvg9"}],"summary":"NLTK: Symlink escape in CorpusReader allows arbitrary local file read outside the corpus root"}