What’s Vulnerable › Vulnerabilities

CVE-2025-66026: REDAXO is Vulnerable to Reflected XSS in Mediapool Info Banner via args[types]

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-11-26 · updated 2026-10-18
• Weakness: CWE-79

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.

Affected products

• redaxo: before 5.20.1 — fixed in 5.20.1

How to fix

Upgrade to a fixed version: redaxo 5.20.1. Check the vendor advisory for mitigations.

References

• https://github.com/redaxo/redaxo/commit/58929062312cf03e344ab04067a365e6b6ee66aa
• https://github.com/redaxo/redaxo/security/advisories/GHSA-x6vr-q3vf-vqgq
• https://github.com/redaxo/redaxo/security/advisories/GHSA-x6vr-q3vf-vqgq

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