{"id":"CVE-2026-62383","summary":"nltk IPIPANCorpusReader Symlink Arbitrary File Read","details":"nltk versions before 3.10.2 contain a symlink-based arbitrary file read vulnerability in IPIPANCorpusReader methods that bypass nltk.pathsec validation entirely. Attackers can place a symlink in the corpus root directory and read arbitrary files accessible to the process by calling channels(), domains(), categories(), or fileids() methods with the symlink filename.","aliases":["GHSA-3hhw-38pf-pxj6","PYSEC-2026-3726"],"modified":"2026-08-29T03:46:43.963779321Z","published":"2026-08-22T14:12:36.606Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62383.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-22"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62383.json"},{"type":"ADVISORY","url":"https://github.com/nltk/nltk/security/advisories/GHSA-3hhw-38pf-pxj6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62383"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/nltk-ipipancorpusreader-symlink-arbitrary-file-read"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nltk/nltk","events":[{"introduced":"bd49f9011d7dc8c6a36b3c4ae71f04060c9b3fb9"},{"fixed":"474af1f5a94b1b8d53fc2b6defec3a2ce7633b74"}],"database_specific":{"source":["AFFECTED_FIELD","CPE_RANGE"],"cpe":"cpe:2.3:a:nltk:nltk:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"3.10.0"},{"fixed":"3.10.2"}]}}],"versions":["v3.10.1","v.3.10.1","v3.10.1-rc2","v3.10.0-rc2","v3.10.0","v3.10.1-rc1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-62383.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"}]}