CVE-2026-55790

published 2026-07-01

CVE-2026-55790: Craft CMS is a content management system (CMS). In versions 5.0.0-RC1 through 5.9.22 and 4.0.0-RC1 through 4.17.15, an attacker with only a GitHub account can…

Priority P3 41 high 7.4 CVSS 4.0

AV N AC L AT P PR N UI A VC H VI H VA N SC N SI N SA N E X CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU X R X V X RE X U X

Craft CMS is a content management system (CMS). In versions 5.0.0-RC1 through 5.9.22 and 4.0.0-RC1 through 4.17.15, an attacker with only a GitHub account can plant a JavaScript payload in a craftcms/cms issue title. When a Craft admin uses the CraftSupport widget’s "Give feedback" screen and types a search term that returns the poisoned issue, the payload executes in the admin’s control panel session. No control panel account or elevated privileges are required on the attacker’s side. This issue has been fixed in versions 4.17.16 and 5.9.23.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
craftcms	cms	—	—
craftcms	cms	—	—
craftcms	cms	>= 4.0.0-RC1 < 4.17.16	4.17.16
craftcms	cms	>= 5.0.0-RC1 < 5.9.23	5.9.23

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CWE-79