CVE-2026-105860 Payload @payloadcms/plugin-multi-tenant - Broken Access Control

Payload @payloadcms/plugin-multi-tenant < 3.90.0 and < 4.0.0-canary.34 contains a broken access control caused by default tenant array field access allowing authenticated users to assign their account to other tenants, letting authenticated users escalate privileges, exploit requires authentication.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.24% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Published
6 October 2026
Updated
15 October 2026
Weakness
CWE-862

Vendor fix

Upgrade to versions 3.90.0 or 4.0.0-canary.34 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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