{"id":"CVE-2026-44542","summary":"FileBrowser Quantum: Unauthenticated Path Traversal in Public Share Delete Allows Arbitrary File Deletion","details":"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.","aliases":["GHSA-fwj3-42wh-8673"],"modified":"2026-05-28T03:53:30.134382484Z","published":"2026-05-14T17:07:30.602Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-22"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44542.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44542.json"},{"type":"ADVISORY","url":"https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-fwj3-42wh-8673"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44542"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/gtsteffaniak/filebrowser","events":[{"introduced":"0"},{"fixed":"6bfc3974192e954f71cc5d1cd04baaaec3b76383"}]}],"versions":["v1.2.1-stable","v1.0.1-stable","v0.7.6-beta","v0.5.2-beta","v0.5.1-beta","v0.5.0-beta","v0.4.2-beta","v0.4.1-beta","v0.4.0-beta","v0.3.7-beta","v0.3.6-beta","v0.3.4"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-44542.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H"}]}