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Servers and applications

CVE-2025-66026

Reflected XSS in Mediapool Info Banner via args[types]

Severity
Medium 6.1
Published
25 Nov 2025
Last changed
18 Oct 2026
Added to UpHeron
3 Nov 2026
Fixed in
5.20.1
Also known as
GHSA-x6vr-q3vf-vqgq
Sources
NVD, Project advisories (GitHub)

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…

Affected software

SoftwareAffected versions
REDAXOServers and applications · cpe:a:redaxo:redaxo
  • Every version before 5.20.1
REDAXOServers and applications · github:redaxo/core
  • Every version before 5.20.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-66026
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-66026
  • GitHub Advisory Database https://github.com/advisories/GHSA-x6vr-q3vf-vqgq
  • github.com https://github.com/redaxo/core/security/advisories/GHSA-x6vr-q3vf-vqgq