CVE WatchOct 12, 2026

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.t

CVSS

7.5

High

EPSS

0.7%

p52

KEV

—

Exploit Today

0-100

Published: Aug 21, 2026 · Last modified: Oct 12, 2026 · CWE-20 · CWE-480

EPSS · 30d

0.7%EPSS · 30 days0.7%

2026-09-302026-10-27

Technical 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.

Official references

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