CVE-2025-66026
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-11-26

Last updated on: 2025-12-03

Assigner: GitHub, Inc.

Description
REDAXO is a PHP-based CMS. Prior to version 5.20.1, a reflected Cross-Site Scripting (XSS) vulnerability exists in the Mediapool view where the request parameter args[types] is rendered into an info banner without HTML-escaping. This allows arbitrary JavaScript execution in the backend context when an authenticated user visits a crafted link while logged in. This issue has been patched in version 5.20.1.
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Meta Information
Published
2025-11-26
Last Modified
2025-12-03
Generated
2026-06-16
AI Q&A
2025-11-26
EPSS Evaluated
2026-06-14
NVD
CVE-2025-66026
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
redaxo redaxo to 5.20.1 (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

This vulnerability is a reflected Cross-Site Scripting (XSS) issue in the REDAXO CMS prior to version 5.20.1. It occurs in the Mediapool view where the request parameter args[types] is displayed in an info banner without proper HTML escaping. This allows an attacker to inject and execute arbitrary JavaScript code in the backend context when an authenticated user clicks on a specially crafted link while logged in.

Impact Analysis

The vulnerability can lead to arbitrary JavaScript execution in the backend for authenticated users. This can result in unauthorized actions performed on behalf of the user, theft of sensitive information such as session tokens, or other malicious activities within the CMS backend environment.

Mitigation Strategies

The immediate step to mitigate this vulnerability is to upgrade REDAXO to version 5.20.1 or later, where the reflected XSS issue in the Mediapool view has been patched.

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