{"id":"CVE-2026-65915","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-65915","summary":"NLTK versions before 3.10.0 contain a logic bug in FileSystemPathPointer.open() where the sandbox validation check compares a normalized path against itself, making the security check…","details":"NLTK versions before 3.10.0 contain a logic bug in FileSystemPathPointer.open() where the sandbox validation check compares a normalized path against itself, making the security check permanently inert. Attackers can pass file:// URLs to nltk.data.load() to read arbitrary files accessible to the process user, including credentials and configuration files.","published":"2026-08-22T15:16:19.500","modified":"2026-08-22T15:16:19.500","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://github.com/nltk/nltk/security/advisories/GHSA-72r2-7mfr-5xr9"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/nltk-before-arbitrary-file-read-via-filesystempathpointer"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-22T15:16:19.500"}}