CVE-2026-34530
Stored XSS in File Browser SPA via Admin Branding Fields
Publication date: 2026-04-01
Last updated on: 2026-04-06
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| filebrowser | filebrowser | to 2.62.2 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
The vulnerability in File Browser prior to version 2.62.2 is a Stored Cross-Site Scripting (XSS) issue affecting the SPA index page. An administrator can inject malicious JavaScript code into the branding.name field, which is then persistently stored and executed for all visitors to the page, including those who are not authenticated.
How can this vulnerability impact me? :
This vulnerability allows an attacker with admin privileges to inject persistent malicious scripts that execute in the browsers of all visitors to the File Browser interface. This can lead to unauthorized actions such as stealing user credentials, session hijacking, or performing actions on behalf of users, potentially compromising the security and integrity of the system and its users.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, you should upgrade File Browser to version 2.62.2 or later, where the Stored Cross-Site Scripting (XSS) issue has been patched.