CVE-2026-79990

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/craftcms/cms
https://github.com/craftcms/cms/releases/tag/5.10.11
https://github.com/craftcms/cms/security/advisories/GHSA-3wcr-p33w-528f
https://www.hckrt.com/hacktivity/HCKRT-XEQKMX

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-02 15:17

Updated : 2026-09-03 17:45

NVD link : CVE-2026-79990

Mitre link : CVE-2026-79990

CVE.ORG link : CVE-2026-79990

JSON object : View

Products Affected

No product.

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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