XSS in Redaxo
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (17.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Redaxo — versions < 5.20.1
Weakness classification (CWE)
References
- github.com/redaxo/redaxo/security/advisories/GHSA-x6vr-q3vf-vqgq (Exploit, Vendor Advisory)
- github.com/redaxo/redaxo/commit/58929062312cf03e344ab04067a365e6b6ee66aa (Patch)
Frequently asked questions
- What is CVE-2025-66026?
- CVE-2025-66026 is a medium-severity vulnerability in Redaxo, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-11-26.
- How severe is CVE-2025-66026?
- Medium severity. CVSS v3 base score is 6.1 out of 10.