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CVE-2026-79990

GQL entry mutation `siteId` bypasses schema site scope, enabling cross-site content read/write/delete PUBLISHED

Description (CNA)

Craft CMS GraphQL entry mutation resolvers (saveEntry, deleteEntry) read siteIddirectly from$argumentswithout passing throughArgumentManagerprepareArguments(), which is the function that enforces site-scope filtering via array_intersect against the GraphQL schema’s allowed sites. The query path (ElementResolverprepareElementQuery) correctly calls prepareArguments()`, so queries to unauthorized sites return empty. But mutations bypass this entirely — an attacker with a token scoped to Site A can create, modify, or delete entries in Site B by passing siteId in the mutations argument.

Affected (CNA)

Vendor / productVersions
craftcms / cmsaffected 5.0.0-RC1 before 5.10.11

CWE

CWE-639

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.