Information Exposure Affecting craftcms/cms package, versions >=4.0.0-RC1, <4.18.0>=5.0.0-RC1, <5.10.0
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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Test your applications- Snyk IDSNYK-PHP-CRAFTCMSCMS-17872169
- published6 Jul 2026
- disclosed6 Jul 2026
- creditUnknown
Introduced: 6 Jul 2026
NewCVE-2026-55792 (opens in a new tab)How to fix?
Upgrade craftcms/cms to version 4.18.0, 5.10.0 or higher.
Overview
craftcms/cms is a content management system.
Affected versions of this package are vulnerable to Information Exposure via the dataUrl function in Twig templates when a control panel user with the utility:system-messages permission embeds a file-reading payload into system email templates. An attacker can access sensitive server files, such as .env, by crafting malicious email templates that are rendered and sent by the system, resulting in the exfiltration of confidential information including database credentials and security keys. This is only exploitable if a non-admin user is granted the utility:system-messages permission and email sending is configured.