CVE-2026-30934 — FileBrowser Quantum: Stored XSS in public share page via unsanitized share metadata (text/template misuse)
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, descript…
Published: 2026-03-10 · CVSS: 8.9 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7