Description
REDAXO is a PHP-based content management system. Prior to 5.21.2, rex_api_install_package_update in redaxo/src/addons/install/lib/api/api_package_update.php inherits the false default from rex_api_function::requiresCsrfProtection() instead of requiring a CSRF token. An unauthenticated attacker can cause a logged-in administrator's browser to request a selected package update from the configured REDAXO package server, changing installed addon code or disrupting the site without the administrator's intent. This issue is fixed in version 5.21.2.
Affected products
redaxo: redaxo
References5
- github.com/redaxo/core/security/advisories/GHSA-m8r3-22v6-g877 ExploitVendor Advisory
- github.com/redaxo/core/security/advisories/GHSA-m8r3-22v6-g877 ExploitVendor Advisory
- github.com/redaxo/core/commit/a13abbffbad4fdea46a4edc86cdba3335… Patch
- github.com/redaxo/core/pull/6579 Issue TrackingPatch
- github.com/redaxo/core/releases/tag/5.21.2 Release Notes
Metrics
- CVSS 3.1
-
6.4
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:L - EPSS — exploit probability
- 0% percentile: 4 · as of 9 November 2026
- CWE
- CWE-352
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