CVE-2026-63421

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/keystonejs/keystone/commit/9fb88b246950ce4de754a43fe6416f20403577b1
https://github.com/keystonejs/keystone/pull/9859
https://github.com/keystonejs/keystone/releases/tag/@keystone-6/core@6.5.3
https://github.com/keystonejs/keystone/security/advisories/GHSA-cqmq-8755-7xvh

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-21 21:17

Updated : 2026-09-09 21:06

NVD link : CVE-2026-63421

Mitre link : CVE-2026-63421

CVE.ORG link : CVE-2026-63421

JSON object : View

Products Affected

No product.

CWE

CWE-20

Improper Input Validation

CWE-480

Use of Incorrect Operator

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