{"id":"CVE-2026-54685","state":"PUBLISHED","title":"FileBrowser Quantum has Username Enumeration via Authentication Timing Side-Channel","description":"FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to version 1.3.2-beta, the `/api/auth/login` authentication endpoint does not execute in constant time. When a non-existent username is supplied, the server returns a `401`/`403` response almost immediately. When a valid username is provided, the server performs a bcrypt password comparison, causing a measurable delay in the response time. Version 1.3.2-beta patches the issue.","publishedAt":"2026-07-20T14:17:13.083Z","updatedAt":"2026-07-21T15:31:49.570Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["gtsteffaniak filebrowser"],"affected":[{"vendor":"gtsteffaniak","product":"filebrowser","versions":[{"version":"< 1.3.2-beta","status":"affected"}]}],"references":["https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-7789-65hx-f26w","https://github.com/gtsteffaniak/filebrowser/commit/af08800667b874620edc6f44c3e2e64fec7abd85","https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.3.2-beta"],"weaknesses":["CWE-208"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/54xxx/CVE-2026-54685.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-54685","state":"PUBLISHED","datePublished":"2026-07-20T14:17:13.083Z","dateUpdated":"2026-07-21T15:31:49.570Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-15T22:53:58.561Z"},"containers":{"cna":{"title":"FileBrowser Quantum has Username Enumeration via Authentication Timing Side-Channel","descriptions":[{"lang":"en","value":"FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to version 1.3.2-beta, the `/api/auth/login` authentication endpoint does not execute in constant time. When a non-existent username is supplied, the server returns a `401`/`403` response almost immediately. When a valid username is provided, the server performs a bcrypt password comparison, causing a measurable delay in the response time. Version 1.3.2-beta patches the issue."}],"affected":[{"vendor":"gtsteffaniak","product":"filebrowser","versions":[{"version":"< 1.3.2-beta","status":"affected"}]}],"references":[{"url":"https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-7789-65hx-f26w","name":"https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-7789-65hx-f26w","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/gtsteffaniak/filebrowser/commit/af08800667b874620edc6f44c3e2e64fec7abd85","name":"https://github.com/gtsteffaniak/filebrowser/commit/af08800667b874620edc6f44c3e2e64fec7abd85","tags":["x_refsource_MISC"]},{"url":"https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.3.2-beta","name":"https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.3.2-beta","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-208","lang":"en","description":"CWE-208: Observable Timing Discrepancy","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-20T14:19:45.686Z"},"source":{"advisory":"GHSA-7789-65hx-f26w","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-7789-65hx-f26w","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-21T15:30:56.605410Z","id":"CVE-2026-54685","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-21T15:31:49.570Z"}}]}}}