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.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-r633-fcgp-m532 FileBrowser Quantum: Stored XSS in public share page via unsanitized share metadata (text/template misuse)
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 11 Mar 2026 12:00:00 +0000

Type Values Removed Values Added
First Time appeared Gtsteffaniak
Gtsteffaniak filebrowser
Vendors & Products Gtsteffaniak
Gtsteffaniak filebrowser

Tue, 10 Mar 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 10 Mar 2026 16:30:00 +0000

Type Values Removed Values Added
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.
Title FileBrowser Quantum: Stored XSS in public share page via unsanitized share metadata (text/template misuse)
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 8.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-10T16:41:10.418Z

Reserved: 2026-03-07T16:40:05.885Z

Link: CVE-2026-30934

cve-icon Vulnrichment

Updated: 2026-03-10T16:40:53.861Z

cve-icon NVD

Status : Received

Published: 2026-03-10T18:18:53.257

Modified: 2026-03-10T18:18:53.257

Link: CVE-2026-30934

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-11T11:49:48Z

Weaknesses