CVE-2026-30934

medium

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.

References

https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-r633-fcgp-m532

https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.3.1-beta

https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.2.2-stable

Details

Source: Mitre, NVD

Published: 2026-03-10

Updated: 2026-03-18

Risk Information

CVSS v2

Base Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.4

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00038