{"id":"GHSA-xhm9-gwgw-3q2q","summary":"@payloadcms/plugin-multi-tenant has a cross-tenant create issue","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 `\u003e= 3.90.0` or `\u003e= 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.","aliases":["CVE-2026-105864"],"modified":"2026-10-07T20:45:07.236890143Z","published":"2026-10-07T20:29:27Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2026-10-07T20:29:27Z","nvd_published_at":"2026-10-06T17:17:22Z","cwe_ids":["CWE-863"],"severity":"MODERATE"},"references":[{"type":"WEB","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":"WEB","url":"https://github.com/payloadcms/payload/commit/b8fc06a18afb6974dc07f95ac1e541c716e5926b"},{"type":"PACKAGE","url":"https://github.com/payloadcms/payload"},{"type":"WEB","url":"https://github.com/payloadcms/payload/releases/tag/v3.90.0"}],"affected":[{"package":{"name":"@payloadcms/plugin-multi-tenant","ecosystem":"npm","purl":"pkg:npm/%40payloadcms/plugin-multi-tenant"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.90.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-xhm9-gwgw-3q2q/GHSA-xhm9-gwgw-3q2q.json"}},{"package":{"name":"@payloadcms/plugin-multi-tenant","ecosystem":"npm","purl":"pkg:npm/%40payloadcms/plugin-multi-tenant"},"ranges":[{"type":"SEMVER","events":[{"introduced":"4.0.0-canary.0"},{"fixed":"4.0.0-canary.34"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-xhm9-gwgw-3q2q/GHSA-xhm9-gwgw-3q2q.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"}]}