CVE-2025-66026

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.

CVSS v3.1 Score

6.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
redaxo	redaxo	< 5.20.1

References

Advisories & Patches

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

Exploits

https://github.com/redaxo/redaxo/security/advisories/GHSA-x6vr-q3vf-vqgq https://github.com/redaxo/redaxo/security/advisories/GHSA-x6vr-q3vf-vqgq

Frequently Asked Questions

What is CVE-2025-66026? +

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. It has a CVSS v3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2025-66026? +

CVE-2025-66026 has a CVSS v3.1 score of 6.1 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-66026? +

CVE-2025-66026 affects products from redaxo, specifically: redaxo. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-66026? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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