Vulnerability Description
Keystone is a content management system for Node.js. Prior to 6.5.3, the findMany resolver in packages/core/src/lib/core/queries/resolvers.ts compares the signed take argument directly with graphql.maxTake, allowing a remote unauthenticated GraphQL client to provide a negative take value whose magnitude exceeds the configured bound. The bypass also applies to relationship queries and can return more records than the developer intended, potentially exhausting service resources. This issue is fixed in version 6.5.3.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/keystonejs/keystone/commit/9fb88b246950ce4de754a43fe6416f2040
- https://github.com/keystonejs/keystone/pull/9859
- https://github.com/keystonejs/keystone/releases/tag/@keystone-6/[email protected]
- https://github.com/keystonejs/keystone/security/advisories/GHSA-cqmq-8755-7xvh
FAQ
What is CVE-2026-63421?
CVE-2026-63421 is a vulnerability with a CVSS score of 7.5 (HIGH). Keystone is a content management system for Node.js. Prior to 6.5.3, the findMany resolver in packages/core/src/lib/core/queries/resolvers.ts compares the signed take argument directly with graphql.ma...
How severe is CVE-2026-63421?
CVE-2026-63421 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-63421?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.