XSS in Filebrowser
CVE-2026-30934
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> with…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.003 (27.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.9 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L.
Affected products
- Filebrowser — versions 1.2.1, 1.3.0
- Gtsteffaniak Filebrowser — versions >= 1.3.0-beta, < 1.3.1-beta, < 1.2.2-stable
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-30934?
- CVE-2026-30934 is a high-severity vulnerability in Filebrowser, classified under Cross-site Scripting. CVSS score: 8.9/10. Published 2026-03-10.
- How severe is CVE-2026-30934?
- High severity. CVSS v3 base score is 8.9 out of 10.