{"id":"CVE-2026-93712","published":"2026-09-22T01:16:55.957","lastModified":"2026-09-22T03:16:58.843","description":"Dancer2 versions from 2.1.0 before 2.2.0 for Perl serve files from outside public_dir via relative path segments in the File route handler.\n\nThe handler joins the request path onto public_dir without collapsing relative segments, and checks only that the result is a readable regular file. A request for `/../outside.txt` escapes public_dir, and percent-encoding the dots reaches the same file.\n\nThe handler is off by default. An application is affected once it names File in route_handlers and sets static_handler to 0, which otherwise refuses a dot segment before the route runs.\n\nAny file the worker process can read is served to an unauthenticated request, including the application's config.yml above public_dir.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-22"],"vendors":[],"products":[],"references":[{"url":"https://github.com/PerlDancer/Dancer2/commit/2446a09ffb83fef71cc75c327bd6e4b1f007b885.patch","tags":[]},{"url":"https://github.com/PerlDancer/Dancer2/security/advisories/GHSA-6xw8-v24c-m783","tags":[]},{"url":"https://metacpan.org/release/CROMEDOME/Dancer2-2.2.0/changes","tags":[]},{"url":"http://www.openwall.com/lists/oss-security/2026/09/22/4","tags":[]}],"exploitRefs":[{"url":"https://github.com/PerlDancer/Dancer2/commit/2446a09ffb83fef71cc75c327bd6e4b1f007b885.patch","tags":[]},{"url":"https://github.com/PerlDancer/Dancer2/security/advisories/GHSA-6xw8-v24c-m783","tags":[]}],"hasPoc":true,"ai":null}