Disclosure summary
## Impact When using the default tenant array field access, an authenticated user could assign themselves to other tenants. **You are affected if:** - You are using `@payloadcms/plugin-multi-tenant` If you configure the tenants arrayFieldAccess.create/update functions, a secured replacement membership field, you are not affected by this specific default behavior. ## Patches Users should upgrade Payload packages to `>= 3.90.0` or `>= 4.0.0-canary.34`. ## Workarounds Configure tenants arrayFieldAccess.create and tenants arrayFieldAccess.update so only trusted users authorized for all tenants can modify memberships.
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
GitHub Reviewed Security Advisories · GHSA-p96c-xwx8-3cqj
Open original source · Updated Oct 07, 2026
Payload has a tenant authorization bypass in Multi-Tenant Plugin
Source severity: HIGH / 7.1
| Ecosystem | Package | Affected range | First patched |
|---|---|---|---|
| npm | @payloadcms/plugin-multi-tenant | < 3.90.0 | 3.90.0 |
| npm | @payloadcms/plugin-multi-tenant | >= 4.0.0-canary.0, < 4.0.0-canary.34 | 4.0.0-canary.34 |
Original records & references
- NIST NVD record
- CVE Program record
- github.com — Reviewed advisory
PUBLISHED 2026-10-07T16:29:53-04:00
MODIFIED 2026-10-07T16:29:55-04:00
INGESTED 2026-10-08T12:30:39-04:00