Payload has a tenant authorization bypass in Multi-Tenant Plugin
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.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @payloadcms/plugin-multi-tenant | < 3.90.0, >= 4.0.0-canary.0, < 4.0.0-canary.34 | 3.90.0, 4.0.0-canary.34 |
References
- https://github.com/payloadcms/payload/security/advisories/GHSA-p96c-xwx8-3cqj
- https://nvd.nist.gov/vuln/detail/CVE-2026-105860
- https://github.com/payloadcms/payload/commit/19b58692d20d3947f31124bf7a88ac14a5ebf02e
- https://github.com/payloadcms/payload
- https://github.com/payloadcms/payload/releases/tag/v3.90.0
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N- Weakness (CWE)
CWE-862- Platform
- npm
- Package
@payloadcms/plugin-multi-tenant- Disclosed
- 07.10.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-p96c-xwx8-3cqj - CC BY 4.0
Vulnerability history: @payloadcms/plugin-multi-tenant
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 10.2026 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 1
Disclosures per year
- 2026: 2
-
Payload has a tenant authorization bypass in Multi-Tenant Plugin this entry
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