VULNERABILITY INTELLIGENCE

CVE-2026-55790

EPSS probability0.46%
CISA KEVNot currently listed
Published2026-07-01
Last modified2026-10-25

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.

Weakness classification

  • security-advisories@github.com: CWE-79

Primary references