CVE-2026-34530
Received Received - Intake
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
File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to version 2.62.2, the SPA index page in File Browser is vulnerable to Stored Cross-Site Scripting (XSS) via admin-controlled branding fields. An admin who sets branding.name to a malicious payload injects persistent JavaScript that executes for ALL visitors, including unauthenticated users. This issue has been patched in version 2.62.2.
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Meta Information
Published
2026-04-01
Last Modified
2026-04-06
Generated
2026-06-16
AI Q&A
2026-04-02
EPSS Evaluated
2026-06-15
NVD
CVE-2026-34530
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
filebrowser filebrowser to 2.62.2 (exc)
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Exploitability
CWE
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KEV
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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.
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Executive Summary

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.

Impact Analysis

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.

Mitigation Strategies

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.

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