CSRF Vulnerability in REDAXO CMS Affects Package Updates
CVE-2026-63000

6.4MEDIUM

Key Information:

Vendor

Redaxo

Status
Core
Vendor
CVE Published:
23 September 2026

What is CVE-2026-63000?

A CSRF vulnerability in the REDAXO content management system allows unauthenticated attackers to trick a logged-in administrator into unintentionally requesting a package update from the REDAXO package server. This flaw results from the 'rex_api_install_package_update' function erroneously inheriting a non-protective default, enabling potential unauthorized changes to installed add-ons or site disruption. Users are advised to upgrade to version 5.21.2 to mitigate this risk.

Affected Version(s)

core < 5.21.2

References

https://github.com/redaxo/core/security/advisories/GHSA-m...
x_refsource_CONFIRM
https://github.com/redaxo/core/pull/6579
x_refsource_MISC
https://github.com/redaxo/core/commit/a13abbffbad4fdea46a...
x_refsource_MISC

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
High
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.