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CVE-2025-66026

Medium

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.

SeverityMedium
CVSS6.1
Exploit probability—
ProductRedaxo
PublishedNov 26, 2025
First seenNov 26, 2025
Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update
  • redaxo redaxo5.20.1 or later
  • redaxo/source5.20.1 or later

Affected products

ProductAffected versionsFixed in
redaxo redaxov < 5.20.15.20.1
redaxo/sourcePackagistv < 5.20.15.20.1

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