{"id":"CVE-2026-44542","sourceIdentifier":"security-advisories@github.com","published":"2026-05-14T18:16:50.157","lastModified":"2026-06-17T10:50:45.697","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.3.1-stable and 1.3.9-beta, attacker-controlled path input is joined with a trusted base path prior to sanitization, allowing traversal sequences (e.g., ../) to escape the intended shared directory. As a result, an unauthenticated attacker possessing a valid public share hash with delete permissions enabled can delete arbitrary files outside the shared directory within the share owner’s configured storage scope. This affects public/api/resources and public/api/resources/bulk. This vulnerability is fixed in 1.3.1-stable and 1.3.9-beta."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"gtsteffaniak","product":"filebrowser","versions":[{"version":"< 1.3.1-stable","status":"affected"},{"version":"< 1.3.9-beta","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","baseScore":9.1,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.2}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-05-15T15:00:31.691150Z","id":"CVE-2026-44542","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-22"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:gtsteffaniak:filebrowser_quantum:*:-:*:*:*:*:*:*","versionEndExcluding":"1.3.1","matchCriteriaId":"95D2BC81-03F2-4413-8BDD-91D0AB66FD94"},{"vulnerable":true,"criteria":"cpe:2.3:a:gtsteffaniak:filebrowser_quantum:*:beta:*:*:*:*:*:*","versionEndExcluding":"1.3.9","matchCriteriaId":"6DBAB5E5-3ABA-4480-A819-E69FECB25E8F"}]}]}],"references":[{"url":"https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-fwj3-42wh-8673","source":"security-advisories@github.com","tags":["Exploit","Vendor Advisory"]},{"url":"https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-fwj3-42wh-8673","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["Exploit","Vendor Advisory"]}]}