PT-2026-51229 · Craft Cms · Cms

Mhe4Am · Published 2026-06-21 · Updated 2026-06-21 · CVE-2026-56381

Mitre

CVSS v3.1

4.8

Medium

Base vector

AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-56381

Affected Products

Cms

References · 3

• https://github.com/craftcms/cms/security/advisories/GHSA-g3hp-vvqf-8vw6 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-56381 · Security Note
• https://vulncheck.com/advisories/craft-cms-stored-xss-via-user-group-name-in-user-permissions-page · Note