{"id":"CVE-2026-93712","state":"PUBLISHED","title":"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","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.","publishedAt":"2026-09-22T00:52:36.047Z","updatedAt":"2026-09-22T19:19:59.077Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","source":"CISA-ADP"},"assigner":"CPANSec","products":["Dancer2"],"affected":[{"packageName":"Dancer2","packageURL":"pkg:cpan/Dancer2","defaultStatus":"unaffected","versions":[{"version":"2.1.0","status":"affected","lessThan":"2.2.0","versionType":"custom"}],"collectionURL":"https://cpan.org/modules","modules":["Dancer2"],"programFiles":["lib/Dancer2/Handler/File.pm"],"programRoutines":[{"name":"Dancer2::Handler::File::code"}],"repo":"https://github.com/PerlDancer/Dancer2"}],"references":["https://github.com/PerlDancer/Dancer2/security/advisories/GHSA-6xw8-v24c-m783","https://github.com/PerlDancer/Dancer2/commit/2446a09ffb83fef71cc75c327bd6e4b1f007b885.patch","https://metacpan.org/release/CROMEDOME/Dancer2-2.2.0/changes","http://www.openwall.com/lists/oss-security/2026/09/22/4"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93712.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93712","state":"PUBLISHED","datePublished":"2026-09-22T00:52:36.047Z","dateUpdated":"2026-09-22T19:19:59.077Z","assignerShortName":"CPANSec","assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","dateReserved":"2026-09-18T15:07:22.163Z"},"containers":{"cna":{"title":"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","descriptions":[{"lang":"en","value":"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."}],"affected":[{"packageName":"Dancer2","packageURL":"pkg:cpan/Dancer2","defaultStatus":"unaffected","versions":[{"version":"2.1.0","status":"affected","lessThan":"2.2.0","versionType":"custom"}],"collectionURL":"https://cpan.org/modules","modules":["Dancer2"],"programFiles":["lib/Dancer2/Handler/File.pm"],"programRoutines":[{"name":"Dancer2::Handler::File::code"}],"repo":"https://github.com/PerlDancer/Dancer2"}],"references":[{"url":"https://github.com/PerlDancer/Dancer2/security/advisories/GHSA-6xw8-v24c-m783","tags":["vendor-advisory"]},{"url":"https://github.com/PerlDancer/Dancer2/commit/2446a09ffb83fef71cc75c327bd6e4b1f007b885.patch","tags":["patch"]},{"url":"https://metacpan.org/release/CROMEDOME/Dancer2-2.2.0/changes","tags":["release-notes"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","description":"CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"CPANSec","orgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","dateUpdated":"2026-09-22T00:52:36.047Z"},"solutions":[{"lang":"en","value":"Upgrade to Dancer2 2.2.0 or later."}],"source":{"discovery":"UNKNOWN"},"timeline":[{"lang":"en","time":"2026-09-16T00:00:00.000Z","value":"Version 2.2.0 released with fix."}],"x_generator":{"engine":"cpansec-cna-tool 0.1"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/09/22/4"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-09-22T02:09:48.478Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-09-22T19:19:41.602914Z","id":"CVE-2026-93712","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-22T19:19:59.077Z"}}]}}}