{"id":"CVE-2026-81726","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-81726","summary":"NLTK through 3.10.3 contains a path traversal vulnerability in model-artifact APIs that bypass pathsec enforcement by using raw file operations on caller-controlled paths. Attackers…","details":"NLTK through 3.10.3 contains a path traversal vulnerability in model-artifact APIs that bypass pathsec enforcement by using raw file operations on caller-controlled paths. Attackers can read or write files outside allowed sandbox roots through TransitionParser, AveragedPerceptron, PerceptronTagger, and maxent parameter APIs when pathsec is enabled.","published":"2026-08-27T17:21:03.387","modified":"2026-08-27T17:21:03.387","cvss":{"score":7,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://github.com/nltk/nltk/security/advisories/GHSA-8mgp-746c-j5xp"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/nltk-through-3.10.3-path-traversal-via-model-artifact-apis"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-27T17:21:03.387"}}