Unsafe Reflection Affecting craftcms/cms package, versions >=4.0.0-RC1, <4.16.17>=5.0.0-RC1, <5.8.21
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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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Test your applications- Snyk IDSNYK-PHP-CRAFTCMSCMS-14873833
- published13 Jan 2026
- disclosed5 Jan 2026
- creditchutchut
Introduced: 5 Jan 2026
CVE-2025-68455 (opens in a new tab)How to fix?
Upgrade craftcms/cms to version 4.16.17, 5.8.21 or higher.
Overview
craftcms/cms is a content management system.
Affected versions of this package are vulnerable to Unsafe Reflection via the __set() and __get() methods in the Behavior class. An administrator can execute arbitrary code on the server by submitting a JSON payload that attaches a maliciousBehavior class to a component and triggers an event, resulting in the execution of an attacker-controlled callable.
Note: This is only exploitable if the attacker has administrator access to the control panel.