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GHSA-cgcg-q9jh-5pr2

MediumCVSS 4.3 / 10
Published Mar 19, 2026·Last modified Mar 27, 2026
Affected Components(0)

No affected components available

Description

Summary

{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.

Impact

This affects any project relying on isFilterable behaviour (at the list or field level) to prevent external users from using the filtering of fields as a discovery mechanism. isFilterable access control using a function can be bypassed by using the cursor input.

This has no impact on projects using isFilterable: false or defaultIsFilterable: false for sensitive fields, or if you have otherwise omitted filtering by these fields from your GraphQL schema. (See workarounds)

Patches

This issue has been patched in @keystone-6/core version 6.5.2.

Workarounds

To mitigate this issue in older versions where patching is not a viable pathway.

  • Set {field}.isFilterable: false statically for relevant fields to prevent filtering by them earlier in the access control pipeline (that is, don't use functions)
  • Set {field}.graphql.omit.read: true for relevant fields, which implicitly removes filtering by these fields your GraphQL schema
Risk Scores
Base Score
4.3

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information.

Threat Intelligence
4.0

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.26%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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