CVE-2026-112776

EUVD-2026-104582
Craft CMS from 5.0.0 before 5.11.0 contains an authorization bypass vulnerability that allows site-scoped GraphQL tokens to mutate other sites' content because requireAllowedSite() is not enforced. Attackers holding a site-A token can create entries in site B via supplied siteId and delete entries, categories, tags, and assets shared across sites.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 21.68%
Common Weakness Enumeration
References
https://github.com/craftcms/cms/security/advisories/GHSA-7rr3-4jcm-x526
https://www.vulncheck.com/advisories/craft-cms-5.0.0-before-5.11.0-graphql-site-scope-bypass-via-mutations