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GHSA-p96c-xwx8-3cqj

HighCVSS 7.1 / 10
Published Oct 7, 2026·Last modified Oct 7, 2026
Affected Components(2)
npm logo@payloadcms/plugin-multi-tenant
< 3.90.0
npm logo@payloadcms/plugin-multi-tenant
4.0.0-canary.0 – 4.0.0-canary.34
Description

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.

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Risk Scores
Base Score
7.1

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability.

Threat Intelligence
4.9

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.19%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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