{"id":"CVE-2024-49766","aliases":["GHSA-f9vj-2wh5-fj8j","PYSEC-2026-2045"],"url":"https://o3.security/vulnerability/CVE-2024-49766","summary":"Werkzeug safe_join not safe on Windows","details":"Werkzeug is a Web Server Gateway Interface web application library. On Python < 3.11 on Windows, os.path.isabs() does not catch UNC paths like //server/share. Werkzeug's safe_join() relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python >= 3.11, or not using Windows, are not vulnerable. Werkzeug version 3.0.6 contains a patch.","published":"2024-10-25T19:22:36.380Z","modified":"2026-08-12T03:51:13.908007116Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"werkzeug","fixedVersion":"3.0.6"}],"fix":{"url":"https://github.com/pallets/werkzeug/commit/2767bcb10a7dd1c297d812cc5e6d11a474c1f092","label":"pallets/werkzeug@2767bcb"},"references":[{"type":"WEB","url":"https://github.com/pallets/werkzeug/releases/tag/3.0.6"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/49xxx/CVE-2024-49766.json"},{"type":"ADVISORY","url":"https://github.com/pallets/werkzeug/security/advisories/GHSA-f9vj-2wh5-fj8j"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-49766"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20250131-0005/"},{"type":"FIX","url":"https://github.com/pallets/werkzeug/commit/2767bcb10a7dd1c297d812cc5e6d11a474c1f092"},{"type":"PACKAGE","url":"https://github.com/pallets/werkzeug"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20250131-0005"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:13.908007116Z"}}