Vulnerability Description
Craft is a platform for creating digital experiences. In versions 4.0.0-RC1 through 4.16.17 and 5.0.0-RC1 through 5.8.21, a Remote Code Execution (RCE) vulnerability exists in Craft CMS where the assembleLayoutFromPost() function in src/services/Fields.php fails to sanitize user-supplied configuration data before passing it to Craft::createObject(). This allows authenticated administrators to inject malicious Yii2 behavior configurations that execute arbitrary system commands on the server. This vulnerability represents an unpatched variant of the behavior injection vulnerability addressed in CVE-2025-68455, affecting different endpoints through a separate code path. This vulnerability is fixed in 5.8.22.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Craftcms | Craft Cms | < 4.16.18 |
Related Weaknesses (CWE)
References
- https://github.com/craftcms/cms/commit/395c64f0b80b507be1c862a2ec942eaacb353748Patch
- https://github.com/craftcms/cms/releases/tag/5.8.22Release Notes
- https://github.com/craftcms/cms/security/advisories/GHSA-7jx7-3846-m7w7ExploitVendor AdvisoryPatch
FAQ
What is CVE-2026-25498?
CVE-2026-25498 is a vulnerability with a CVSS score of 7.2 (HIGH). Craft is a platform for creating digital experiences. In versions 4.0.0-RC1 through 4.16.17 and 5.0.0-RC1 through 5.8.21, a Remote Code Execution (RCE) vulnerability exists in Craft CMS where the asse...
How severe is CVE-2026-25498?
CVE-2026-25498 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-25498?
Check the references section above for vendor advisories and patch information. Affected products include: Craftcms Craft Cms.