Protection Mechanism Failure Affecting craftcms/cms package, versions >=4.0.0-RC1, <4.18.3>=5.0.0-RC1, <5.10.7
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-18584424
- published7 Aug 2026
- disclosed6 Aug 2026
- creditUnknown
Introduced: 6 Aug 2026
NewCVE-2026-72781 (opens in a new tab)How to fix?
Upgrade craftcms/cms to version 4.18.3, 5.10.7 or higher.
Overview
craftcms/cms is a content management system.
Affected versions of this package are vulnerable to Protection Mechanism Failure through the SecurityPolicy process. An attacker can execute arbitrary code on the server by rendering a malicious Twig template after authenticating to the control panel. This is only exploitable if the attacker has authenticated access to the control panel and can render Twig templates, even when the Twig sandbox is enabled through enableTwigSandbox().