{"id":"GHSA-cgcg-q9jh-5pr2","summary":"@keystone-6/core: `isFilterable` bypass via `cursor` parameter in findMany (CVE-2025-46720 incomplete fix)","details":"# Summary  \n`{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.\n\nThe fix for [CVE-2025-46720](https://github.com/keystonejs/keystone/security/advisories/GHSA-hg9m-67mm-7pg3) (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.\n\n# Impact  \nThis 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.\n\nThis 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)\n\n# Patches  \nThis issue has been patched in `@keystone-6/core` version 6.5.2.\n\n# Workarounds  \nTo mitigate this issue in older versions where patching is not a viable pathway.\n\n- 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)\n- Set `{field}.graphql.omit.read: true` for relevant fields, which implicitly removes filtering by these fields your GraphQL schema","aliases":["CVE-2026-33326"],"modified":"2026-03-27T22:03:43.918305Z","published":"2026-03-19T18:37:42Z","database_specific":{"github_reviewed_at":"2026-03-19T18:37:42Z","nvd_published_at":"2026-03-24T20:16:28Z","cwe_ids":["CWE-863"],"severity":"MODERATE","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/keystonejs/keystone/security/advisories/GHSA-cgcg-q9jh-5pr2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33326"},{"type":"PACKAGE","url":"https://github.com/keystonejs/keystone"}],"affected":[{"package":{"name":"@keystone-6/core","ecosystem":"npm","purl":"pkg:npm/%40keystone-6/core"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"6.5.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-cgcg-q9jh-5pr2/GHSA-cgcg-q9jh-5pr2.json","last_known_affected_version_range":"\u003c= 6.5.1"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"}]}