{"id":"CVE-2026-62385","title":"NLTK versions before 3.10.0 contain a path traversal vulnerability in FramenetCorpusReader and NKJPCorpusReader that allows attackers to parse XML files outside the corpus root by supplying unsafe selectors or poisoned index state","summary":"NLTK versions before 3.10.0 contain a path traversal vulnerability in FramenetCorpusReader and NKJPCorpusReader that allows attackers to parse XML files outside the corpus root by supplying unsafe selectors or poisoned index state. Attac…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-73","CWE-22","CWE-706"],"published":"2026-08-22","updated":"2026-08-22","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-62385","references":[{"url":"https://github.com/nltk/nltk/security/advisories/GHSA-568f-pv23-39p4","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/nltk-path-traversal-via-framenet-and-nkjp-readers","label":"disclosure@vulncheck.com"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62385"},{"url":"https://github.com/nltk/nltk/pull/3579"},{"url":"https://github.com/nltk/nltk/pull/3581"},{"url":"https://github.com/nltk/nltk/commit/7d1389d0789c1eca56bd0ed444089e0a3972e3ed"},{"url":"https://github.com/nltk/nltk/commit/bf3bf32786791394a1008258b4917a7f2d4dbcda"},{"url":"https://github.com/nltk/nltk/releases/tag/v3.10.0"},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/nltk/PYSEC-2026-3728.yaml"},{"url":"https://github.com/advisories/GHSA-568f-pv23-39p4"},{"url":"https://github.com/nltk/nltk"}],"tags":["nvd","ghsa","pip","osv"],"ingestedAt":"2026-08-23T04:42:15.201Z","epss":0.00367,"epssPercentile":0.30454,"aliases":["GHSA-568f-pv23-39p4","PYSEC-2026-3728"],"ecosystem":"pip","vendor":"nltk","product":"nltk","affected":["nltk <= 3.9.4"],"patched":["nltk 3.10.0"],"slug":"CVE-2026-62385","body":"## Overview\n\nNLTK versions before 3.10.0 contain a path traversal vulnerability in FramenetCorpusReader and NKJPCorpusReader that allows attackers to parse XML files outside the corpus root by supplying unsafe selectors or poisoned index state. Attackers can exploit frame_by_name, doc, lu, and header methods with crafted parameters to read arbitrary XML files accessible to the application.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-62385)\n\nAffected packages:\n\n- `nltk <= 3.9.4`\n\nPatched in:\n\n- `nltk 3.10.0`\n\nSource: https://github.com/advisories/GHSA-568f-pv23-39p4","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":32.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}