CVE-2026-56381

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

CVSS 4.6 MEDIUMEPSS 0.1%CWE-79

Vexday Risk Score

13Bajo

Decisión SSVC (CISA)

Track

Sin señal de explotación → monitorear

CVSS 4.6EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Ciclo de vida

21 jun 2026Publicada en NVD

Recomendación: Monitorear — sin señal de explotación por ahora.

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

Productos afectados

craftcms · cms

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Referencias

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