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.
History

Wed, 29 Jul 2026 15:00:00 +0000

Type Values Removed Values Added
First Time appeared Craftcms
Craftcms craftcms
Vendors & Products Craftcms
Craftcms craftcms

Thu, 02 Jul 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 01 Jul 2026 23:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Craft CMS: DOM XSS via GitHub issue title in CraftSupport widget
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 7.4, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-07-01T22:57:53.934Z

Updated: 2026-07-02T19:41:26.967Z

Reserved: 2026-06-17T14:40:28.380Z

Link: CVE-2026-55790

cve-icon Vulnrichment

Updated: 2026-07-02T19:41:21.380Z

cve-icon NVD

No data.

cve-icon Redhat

No data.