CVE-2026-30934 | THREATINT

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.

PUBLISHED Reserved 2026-03-07 | Published 2026-03-10 | Updated 2026-03-10 | Assigner GitHub_M

HIGH: 8.9CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

>= 1.3.0-beta, < 1.3.1-beta

affected

< 1.2.2-stable

affected

References

github.com/...rowser/security/advisories/GHSA-r633-fcgp-m532

github.com/...ffaniak/filebrowser/releases/tag/v1.2.2-stable

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

cve.org (CVE-2026-30934)

nvd.nist.gov (CVE-2026-30934)

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