CVE-2026-44011
Craft CMS has Potential Authenticated Remote Code Execution via Malicious Attached Behavior
Impact
Craft CMS is a content management system (CMS). From 4.0.0 to before 4.17.12 and 5.9.18, Craft CMS which contains an input-handling flaw in a Yii object creation path that let any authenticated user inject malicious configuration and execute arbitrary commands on the server. The request-controlled condition field layouts data is converted into a live FieldLayout object without a Component::cleanseConfig() boundary. Because Craft configures models before parent::__construct(), attacker-controlled special config keys can take effect during object creation, and FieldLayout initialization then triggers a same-request event. This vulnerability is fixed in 4.17.12 and 5.9.18.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | craftcms/cms | >= 4.0.0, < 4.17.12 | 4.17.12 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-qrgm-p9w5-rrfw
- https://github.com/craftcms/cms/security/advisories/GHSA-255j-qw47-wjh5
- https://github.com/craftcms/cms/security/advisories/GHSA-qrgm-p9w5-rrfw
- https://nvd.nist.gov/vuln/detail/CVE-2026-44011
- https://github.com/craftcms/cms/commit/ab85ca7f5f926994f723f60584054a1f4c4c5de3