CVE-2026-30934

HIGH

8.9

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.

CVE Details

CVSS v3.1 Score8.9

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionREQUIRED

Published3/10/2026

Last Modified3/18/2026

Sourcenvd

Honeypot Sightings0

Affected Products

filebrowser:filebrowser

Weaknesses (CWE)

CWE-79

References

https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.2.2-stable(security-advisories@github.com)

https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.3.1-beta(security-advisories@github.com)

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

IOC Correlations

No correlations recorded

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