CVE-2026-56381

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 4.0

4.6CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

CVSS 3.1

4.8CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 16% of CVEs (scores of 2026-10-25)

CWE

CWE-79

Published

2026-06-21

Modified

2026-10-25

Record from

the NVD, synced 2026-10-25

References

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

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