@payloadcms/plugin-multi-tenant has a cross-tenant create issue
### Impact An 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. Reads and direct edits to an existing target-tenant document were not bypassed. You are affected if: - You are using @payloadcms/plugin-multi-tenant ### Patches Users should upgrade Payload packages to `>= 3.90.0` or `>= 4.0.0-canary.34`. ### Workarounds You can add access control with `accessResultOverride` on the multi-tenant collection config to ensure a user has access to the tenant before creating.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-105864US | medium4.3OT elevated | — | ||
Payload is a free and open source headless content management system. In @payloadcms/plugin-multi-tenant versions before 3.90.0 and canary versions before 4.0.0-canary.34, an authe… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/payloadcms/payloadPACKAGE
- https://github.com/payloadcms/payload/commit/b8fc06a18afb6974dc07f95ac1e541c716e5926bWEB
- https://github.com/payloadcms/payload/releases/tag/v3.90.0WEB
- https://github.com/payloadcms/payload/security/advisories/GHSA-xhm9-gwgw-3q2qWEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-105864ADVISORY
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