CVE-2026-30934

MEDIUM EPSS 26.6%
Published Mar 10, 20263mo ago · Modified Jun 17, 20261w ago
5.4 CVSS 3.1
Medium
Find Similar
Published Mar 10, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
5.4
Exploitability
2.3
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
26.6% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 3

VendorProductVersionRange
filebrowserfilebrowser* ≤1.2.9
filebrowserfilebrowser1.2.1any
filebrowserfilebrowser1.3.0any

References 3

  • github.com https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.2.2-stable
    Release Notes
  • github.com https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.3.1-beta
    Release Notes
  • github.com https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-r633-fcgp-m532
    ExploitVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.