Arbitrary Code Injection Affecting craftcms/cms package, versions >=4.0.0-beta.1, <4.17.4>=5.0.0-beta.1, <5.9.9
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.
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- published11 Mar 2026
- disclosed11 Mar 2026
- creditChris Alupului
Introduced: 11 Mar 2026
NewCVE-2026-31857 (opens in a new tab)How to fix?
Upgrade craftcms/cms to version 4.17.4, 5.9.9 or higher.
Overview
craftcms/cms is a content management system.
Affected versions of this package are vulnerable to Arbitrary Code Injection via the BaseElementSelectConditionRule::getElementIds function. An attacker can execute arbitrary code by sending a crafted condition rule through standard element listing endpoints. This is only exploitable if the attacker has authenticated access to the control panel, regardless of privilege level, and even if production hardening settings are enabled.