CVE-2026-56381
Craft CMS - Stored XSS via User Group Name in User Permissions Page
- State
- Published
- Severity
- 4.6 Medium
- Published
- Jun 21, 2026
- Updated
- Jun 23, 2026
- Reserved
- Jun 21, 2026
Description
Craft CMS from version 5.0.0-RC1 contains a stored cross-site scripting vulnerability in the User Permissions page where user group names are rendered without proper HTML escaping. Attackers with admin access can inject arbitrary JavaScript via the user group name field that executes when other users view or edit permissions.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.6 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 4.8 Medium | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
cmscraftcms |
|
References
- GHSA Advisory GHSA-g3hp-vvqf-8vw6vendor-advisory
- VulnCheck Advisory: Craft CMS - Stored XSS via User Group Name in User Permissions Pagethird-party-advisory
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