Reflected Cross-Site Scripting Vulnerability in REDAXO CMS
CVE-2025-66026

6.1MEDIUM

Key Information:

Vendor

Redaxo

Status
Redaxo
Vendor
CVE Published:
26 November 2025

What is CVE-2025-66026?

The REDAXO CMS, a popular PHP-based content management system, presents a reflected Cross-Site Scripting (XSS) vulnerability affecting versions prior to 5.20.1. This vulnerability stems from the Mediapool view, where the request parameter 'args[types]' is improperly rendered into an info banner without HTML escaping. As a result, when an authenticated user clicks on a specially crafted link, it may allow the execution of arbitrary JavaScript within the backend context, potentially compromising user sessions and sensitive data. The issue has been addressed and patched in version 5.20.1.

Affected Version(s)

redaxo < 5.20.1

References

https://github.com/redaxo/redaxo/security/advisories/GHSA...
x_refsource_CONFIRM
https://github.com/redaxo/redaxo/commit/58929062312cf03e3...
x_refsource_MISC

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-66026 : Reflected Cross-Site Scripting Vulnerability in REDAXO CMS