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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 3
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Filebrowser Filebrowser
cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:*
|
— |
<= 1.2.9
|
|
Filebrowser Filebrowser
cpe:2.3:a:filebrowser:filebrowser:1.2.1:stable:*:*:*:*:*:*
|
— | — |
|
Filebrowser Filebrowser
cpe:2.3:a:filebrowser:filebrowser:1.3.0:beta:*:*:*:*:*:*
|
— | — |
References 3
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-…
security-advisories@github.com