Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') Affecting craftcms/cms package, versions >=4.0.0-RC1, <4.16.18>=5.0.0-RC1, <5.8.22
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-PHP-CRAFTCMSCMS-15253636
- published10 Feb 2026
- disclosed9 Feb 2026
- creditrlarabee, Raj Chowdhury
Introduced: 9 Feb 2026
CVE-2026-25498 (opens in a new tab)How to fix?
Upgrade craftcms/cms to version 4.16.18, 5.8.22 or higher.
Overview
craftcms/cms is a content management system.
Affected versions of this package are vulnerable to Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') via the assembleLayoutFromPost() function. An attacker can execute arbitrary system commands on the server by injecting malicious configuration data into the fieldLayout POST parameter, which is processed without proper sanitization and passed to object creation routines.