{"id":"CVE-2026-109956","published":"2026-10-13T14:17:34.520","lastModified":"2026-10-16T19:15:07.947","description":"NLTK through 3.10.3 contains a path traversal vulnerability in WekaClassifier that allows attackers to bypass nltk.pathsec containment by supplying unvalidated model paths. Attackers controlling the model_filename or model argument can make the weka JVM write files via -d or probe files via -l outside allowed data roots.","cvssScore":7,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L","cwes":["CWE-22"],"vendors":[],"products":[],"references":[{"url":"https://github.com/nltk/nltk/security/advisories/GHSA-j456-xh4h-cpf2","tags":[]},{"url":"https://www.vulncheck.com/advisories/nltk-through-3.10.3-path-traversal-via-wekaclassifier-model-path","tags":[]}],"exploitRefs":[{"url":"https://github.com/nltk/nltk/security/advisories/GHSA-j456-xh4h-cpf2","tags":[]}],"hasPoc":true,"ai":null}