Template Injection Affecting craftcms/cms package, versions >=4.0.0-RC1, <4.17.0-beta.1>=5.8.7, <5.9.0-beta.1
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-15440545
- published10 Mar 2026
- disclosed3 Mar 2026
- creditAndrea Bocchetti
Introduced: 3 Mar 2026
NewCVE-2026-28695 (opens in a new tab)How to fix?
Upgrade craftcms/cms to version 4.17.0-beta.1, 5.9.0-beta.1 or higher.
Overview
craftcms/cms is a content management system.
Affected versions of this package are vulnerable to Template Injection via the create function. An attacker can execute arbitrary code on the server by supplying a crafted payload that instantiates dangerous classes, such as Symfony\Component\Process\Process, and triggers command execution through template injection.
Note: This is only exploitable if the attacker has administrator permissions or access to the System Messages utility, and the allowAdminChanges setting is enabled in production or access to the System Messages utility is available.