{"id":"CVE-2026-105864","aliases":["GHSA-xhm9-gwgw-3q2q"],"url":"https://o3.security/vulnerability/CVE-2026-105864","summary":"Payload: Cross-tenant create in @payloadcms/plugin-multi-tenant","details":"### Impact\nAn authenticated user limited to one tenant could create a record in another tenant. This requires the multi-tenant plugin with at least one tenant-enabled collection.\n\nReads and direct edits to an existing target-tenant document were not bypassed.\n\nYou are affected if:\n- You are using @payloadcms/plugin-multi-tenant\n\n### Patches\nUsers should upgrade Payload packages to `>= 3.90.0` or `>= 4.0.0-canary.34`.\n\n### Workarounds\nYou can add access control with `accessResultOverride` on the multi-tenant collection config to ensure a user has access to the tenant before creating.","published":"2026-10-06T16:42:27.942Z","modified":"2026-10-21T02:54:34.938866150Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"@payloadcms/plugin-multi-tenant","fixedVersion":"3.90.0"},{"ecosystem":"npm","name":"@payloadcms/plugin-multi-tenant","fixedVersion":"4.0.0-canary.34"}],"fix":{"url":"https://github.com/payloadcms/payload/commit/b8fc06a18afb6974dc07f95ac1e541c716e5926b","label":"payloadcms/payload@b8fc06a"},"references":[{"type":"WEB","url":"https://github.com/payloadcms/payload/releases/tag/v3.90.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105864.json"},{"type":"ADVISORY","url":"https://github.com/payloadcms/payload/security/advisories/GHSA-xhm9-gwgw-3q2q"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105864"},{"type":"FIX","url":"https://github.com/payloadcms/payload/commit/b8fc06a18afb6974dc07f95ac1e541c716e5926b"},{"type":"PACKAGE","url":"https://github.com/payloadcms/payload"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-21T02:54:34.938866150Z"}}