Medium 4.8Published Jun 21, 2026

CVE-2026-56381Craft CMS - Stored XSS via User Group Name in User Permissions Page

Updated under an hour ago (Oct 27, 2026, 4:40 AM ET)

Does this affect you?

It affects craftcms cms. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for craftcms cms

Exploited in the last 30 days

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.

CVSS: 4.8 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Jun 22, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

craftcms cms craftcms:cms (from the name)	from 5.0.0-RC1 before 5.8.22; 5.8.22 not affected	CNA record

References

References

https://github.com/craftcms/cms/security/advisories/GHSA-g3hp-vvqf-8vw6	vendor-advisory
https://www.vulncheck.com/advisories/craft-cms-stored-xss-via-user-group-name-in-user-permissions-page	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.