CVE-2026-63421
CVE-2026-63421 · Keystone: `graphql.maxTake` bypass with negative `take`
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 7.5 · High · EPSS 0.7% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
keystone
- Versions
- < 6.5.3: Affected
No fix published
@keystone-6/core npm
- Affected ranges
- SEMVER: < 6.5.3
Update to 6.5.3
Original sources
- https://github.com/keystonejs/keystone/security/advisories/GHSA-cqmq-8755-7xvh
- https://github.com/keystonejs/keystone/pull/9859
- https://github.com/keystonejs/keystone/commit/9fb88b246950ce4de754a43fe6416f20403577b1
- https://github.com/keystonejs/keystone/releases/tag/@keystone-6/[email protected]
- https://nvd.nist.gov/vuln/detail/CVE-2026-63421