Craft CMS is a content management system (CMS). From version 4.0.0-RC1 to before version 4.17.5 and from version 5.0.0-RC1 to before version 5.9.11, there is a Behavior injection RCE vulnerability in ElementIndexesController and FieldsController. Craft control panel administrator permissions and allowAdminChanges must be enabled for this to work. This issue has been patched in versions 4.17.5 and 5.9.11.
https://github.com/craftcms/cms/security/advisories/GHSA-7jx7-3846-m7w7
https://github.com/craftcms/cms/security/advisories/GHSA-4484-8v2f-5748
https://github.com/craftcms/cms/commit/dfec46362fcb40b330ce8a4d8136446e65085620
https://github.com/craftcms/cms/commit/78d181e12e0b15e1300f54ec85f19859d3300f70
Published: 2026-03-16
Updated: 2026-03-17
Base Score: 8.3
Vector: CVSS2#AV:N/AC:L/Au:M/C:C/I:C/A:C
Severity: High
Base Score: 7.2
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Severity: High
Base Score: 8.6
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Severity: High
EPSS: 0.00012