keystonejs/keystone · Security
Keystone vulnerable to `graphql.maxTake` bypass with negative `take`
- GHSA ID
- GHSA-cqmq-8755-7xvh
- CVE ID
- CVE-2026-63421
- Severity
- high
- Published
- Updated
- CVSS
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS v3
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
Summary
The value of graphql.maxTake can be bypassed by providing a negative input.
This can be used to exceed the developer's intended graphql.maxTake value, allowing queries to return results in excess of the graphql.maxTake value set.
Impact
This affects any project relying on graphql.maxTake to bound the number of items returned per query.
Patches
This issue has been patched in @keystone-6/core version 6.5.3.
If you cannot patch, you can workaround this by restricting take input values in your GraphQL queries to the bounded value, or by blocking negative values.
Credit
This issue was found by Haxset's Security Scanner and validated by their team.
CWEs
- CWE-20 · Improper Input Validation
- CWE-480 · Use of Incorrect Operator
References
- 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://github.com/advisories/GHSA-cqmq-8755-7xvh ↗