{"id":"CVE-2026-116682","state":"PUBLISHED","title":"FileBrowser Quantum: Symlink following escapes user scope allowing arbitrary file read outside the served directory","description":"FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.5.2-stable and 2.0.1-beta, file read handling in backend/pkg/indexing/indexingFiles.go resolves symbolic links through GetRealPath without confirming that the resolved target remains inside the source root and the user's authorized scope. Download, preview, media, OnlyOffice, and public-share read flows that enable FollowSymlinks can therefore serve an out-of-scope target through a reachable in-scope symlink. An authenticated user with download access can read server-accessible files outside the assigned scope, and a holder of a public share link can do the same without an account when the shared directory exposes such a symlink. This issue is fixed in 1.5.2-stable and 2.0.1-beta.","publishedAt":"2026-10-27T17:48:04.364Z","updatedAt":"2026-10-27T17:48:04.364Z","severity":{"score":8.6,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["gtsteffaniak filebrowser"],"affected":[{"vendor":"gtsteffaniak","product":"filebrowser","versions":[{"version":"< 1.5.2-stable","status":"affected"},{"version":">= 2.0.0-beta, < 2.0.1-beta","status":"affected"}]}],"references":["https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-mgqf-5mf5-prfj","https://github.com/gtsteffaniak/filebrowser/pull/2795","https://github.com/gtsteffaniak/filebrowser/pull/2800","https://github.com/gtsteffaniak/filebrowser/commit/3c8c02414eefd3351ffe437fa39ff6eb150ffa67","https://github.com/gtsteffaniak/filebrowser/commit/4126edeb07a015c3809a89249b283e07a4e50c38","https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.5.2-stable","https://github.com/gtsteffaniak/filebrowser/releases/tag/v2.0.1-beta"],"weaknesses":["CWE-22","CWE-59"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/116xxx/CVE-2026-116682.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-116682","state":"PUBLISHED","datePublished":"2026-10-27T17:48:04.364Z","dateUpdated":"2026-10-27T17:48:04.364Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-26T20:00:59.829Z"},"containers":{"cna":{"title":"FileBrowser Quantum: Symlink following escapes user scope allowing arbitrary file read outside the served directory","descriptions":[{"lang":"en","value":"FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.5.2-stable and 2.0.1-beta, file read handling in backend/pkg/indexing/indexingFiles.go resolves symbolic links through GetRealPath without confirming that the resolved target remains inside the source root and the user's authorized scope. Download, preview, media, OnlyOffice, and public-share read flows that enable FollowSymlinks can therefore serve an out-of-scope target through a reachable in-scope symlink. An authenticated user with download access can read server-accessible files outside the assigned scope, and a holder of a public share link can do the same without an account when the shared directory exposes such a symlink. This issue is fixed in 1.5.2-stable and 2.0.1-beta."}],"affected":[{"vendor":"gtsteffaniak","product":"filebrowser","versions":[{"version":"< 1.5.2-stable","status":"affected"},{"version":">= 2.0.0-beta, < 2.0.1-beta","status":"affected"}]}],"references":[{"url":"https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-mgqf-5mf5-prfj","name":"https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-mgqf-5mf5-prfj","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/gtsteffaniak/filebrowser/pull/2795","name":"https://github.com/gtsteffaniak/filebrowser/pull/2795","tags":["x_refsource_MISC"]},{"url":"https://github.com/gtsteffaniak/filebrowser/pull/2800","name":"https://github.com/gtsteffaniak/filebrowser/pull/2800","tags":["x_refsource_MISC"]},{"url":"https://github.com/gtsteffaniak/filebrowser/commit/3c8c02414eefd3351ffe437fa39ff6eb150ffa67","name":"https://github.com/gtsteffaniak/filebrowser/commit/3c8c02414eefd3351ffe437fa39ff6eb150ffa67","tags":["x_refsource_MISC"]},{"url":"https://github.com/gtsteffaniak/filebrowser/commit/4126edeb07a015c3809a89249b283e07a4e50c38","name":"https://github.com/gtsteffaniak/filebrowser/commit/4126edeb07a015c3809a89249b283e07a4e50c38","tags":["x_refsource_MISC"]},{"url":"https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.5.2-stable","name":"https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.5.2-stable","tags":["x_refsource_MISC"]},{"url":"https://github.com/gtsteffaniak/filebrowser/releases/tag/v2.0.1-beta","name":"https://github.com/gtsteffaniak/filebrowser/releases/tag/v2.0.1-beta","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.6,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-59","lang":"en","description":"CWE-59: Improper Link Resolution Before File Access ('Link Following')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-27T17:48:04.364Z"},"source":{"advisory":"GHSA-mgqf-5mf5-prfj","discovery":"UNKNOWN"}}}}}