{"id":"CVE-2026-30934","state":"PUBLISHED","title":"FileBrowser Quantum: Stored XSS in public share page via unsanitized share metadata (text/template misuse)","description":"FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.3.1-beta and 1.2.2-stable, Stored XSS is possible via share metadata fields (e.g., title, description) that are rendered into HTML for /public/share/<hash> without context-aware escaping. The server uses text/template instead of html/template, allowing injected scripts to execute when victims visit the share URL. This vulnerability is fixed in 1.3.1-beta and 1.2.2-stable.","publishedAt":"2026-03-10T16:12:23.434Z","updatedAt":"2026-03-10T16:41:10.418Z","severity":{"score":8.9,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["gtsteffaniak filebrowser"],"affected":[{"vendor":"gtsteffaniak","product":"filebrowser","versions":[{"version":">= 1.3.0-beta, < 1.3.1-beta","status":"affected"},{"version":"< 1.2.2-stable","status":"affected"}]}],"references":["https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-r633-fcgp-m532","https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.2.2-stable","https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.3.1-beta"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/30xxx/CVE-2026-30934.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-30934","state":"PUBLISHED","datePublished":"2026-03-10T16:12:23.434Z","dateUpdated":"2026-03-10T16:41:10.418Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-03-07T16:40:05.885Z"},"containers":{"cna":{"title":"FileBrowser Quantum: Stored XSS in public share page via unsanitized share metadata (text/template misuse)","descriptions":[{"lang":"en","value":"FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.3.1-beta and 1.2.2-stable, Stored XSS is possible via share metadata fields (e.g., title, description) that are rendered into HTML for /public/share/<hash> without context-aware escaping. The server uses text/template instead of html/template, allowing injected scripts to execute when victims visit the share URL. This vulnerability is fixed in 1.3.1-beta and 1.2.2-stable."}],"affected":[{"vendor":"gtsteffaniak","product":"filebrowser","versions":[{"version":">= 1.3.0-beta, < 1.3.1-beta","status":"affected"},{"version":"< 1.2.2-stable","status":"affected"}]}],"references":[{"url":"https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-r633-fcgp-m532","name":"https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-r633-fcgp-m532","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.2.2-stable","name":"https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.2.2-stable","tags":["x_refsource_MISC"]},{"url":"https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.3.1-beta","name":"https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.3.1-beta","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":8.9,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-03-10T16:12:23.434Z"},"source":{"advisory":"GHSA-r633-fcgp-m532","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-30934","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-03-10T16:38:59.115847Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-10T16:41:10.418Z"}}]}}}