High severity8.8NVD Advisory· Published Sep 2, 2026· Updated Sep 2, 2026

CVE-2026-84796

Description

Craft CMS versions before 5.10.11 contain a site scope bypass vulnerability in GraphQL entry mutation resolvers that fail to validate siteId through ArgumentManager::prepareArguments(). Attackers with tokens scoped to one site can read, modify, or delete entries across unauthorized sites by passing siteId directly in mutation arguments.

Affected products

Craftcms/CMSllm-fuzzy
Range: <5.10.11

Patches

Vulnerability mechanics

References

github.com/craftcms/cms/security/advisories/GHSA-3wcr-p33w-528fnvd
www.vulncheck.com/advisories/craft-cms-5.0.0-rc1-before-5.10.11-graphql-entry-mutation-site-scope-bypassnvd

News mentions

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