High severity · published Oct 6, 2026
CVE-2026-105860
Payload: Tenant authorization bypass in Multi-Tenant Plugin
7.1
CVSS
0.2%
EPSS
No
On KEV
Description
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, the default tenant array field access allows an authenticated user to assign the user's own account to other tenants. Deployments that replace the default behavior with secured tenants arrayFieldAccess.create and tenants arrayFieldAccess.update functions are not affected by this behavior. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 9% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PA
payload · payloadcms
< 3.90.0; >= 4.0.0-canary.0, < 4.0.0-canary.34 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-105860
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-105860
x_refsource_CONFIRM
https://github.com/payloadcms/payload/security/advisories/GHSA-p96c-xwx8-3cqj
x_refsource_MISC
https://github.com/payloadcms/payload/commit/19b58692d20d3947f31124bf7a88ac14a5ebf02e
x_refsource_MISC
https://github.com/payloadcms/payload/releases/tag/v3.90.0
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