CVE-2026-30934
High
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.
SeverityHigh
CVSS8.9
Exploit probability36. percentile0.4%
ProductFilebrowser
PublishedMar 10, 2026
First seenMar 10, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- github.com/gtsteffaniak/filebrowser0.0.0-20260307130210-09713b32a5f6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| filebrowser filebrowser | v ≤ 1.2.9, 1.2.1, 1.3.0 | — |
| github.com/gtsteffaniak/filebrowserGo | v < 0.0.0-20260307130210-09713b32a5f6 | 0.0.0-20260307130210-09713b32a5f6 |
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