All vulnerabilities
CVE-2026-105864GHSA-xhm9-gwgw-3q2q

@payloadcms/plugin-multi-tenant has a cross-tenant create issue

payloadcms @payloadcms/plugin-multi-tenantnpmLibraries & packages
Open in ThreatlineRecord JSON
CVSS
5.3Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.19%Chance of exploitation activity in the next 30 days, higher than 8% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in3.90.0Also 4.0.0-canary.34GitHub
Published6 Oct 2026Updated 7 Oct 2026CVE List

What fixes it

  • 3.90.0@payloadcms/plugin-multi-tenant, npmGitHubnpm install @payloadcms/plugin-multi-tenant@3.90.0
  • 4.0.0-canary.34@payloadcms/plugin-multi-tenant, npmGitHubnpm install @payloadcms/plugin-multi-tenant@4.0.0-canary.34

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

Impact

An authenticated user limited to one tenant could create a record in another tenant. This requires the multi-tenant plugin with at least one tenant-enabled collection.

Reads and direct edits to an existing target-tenant document were not bypassed.

You are affected if:

  • You are using @payloadcms/plugin-multi-tenant

Patches

Users should upgrade Payload packages to >= 3.90.0 or >= 4.0.0-canary.34.

Workarounds

You can add access control with accessResultOverride on the multi-tenant collection config to ensure a user has access to the tenant before creating.

Text from GitHub Advisory Database

Affected versions 8

  • @payloadcms/plugin-multi-tenant, npm< 3.90.0GitHub
  • @payloadcms/plugin-multi-tenant, npm>= 4.0.0-canary.0, < 4.0.0-canary.34GitHub
  • payloadaffected: < 3.90.0CVE List
  • payloadaffected: >= 4.0.0-canary.0, < 4.0.0-canary.34CVE List
  • plugin-multi-tenantaffected: < 3.90.0CVE List
  • plugin-multi-tenantaffected: >= 4.0.0-canary.0, < 4.0.0-canary.34CVE List
  • @payloadcms/plugin-multi-tenant, npmfrom first release, fixed in 3.90.0OSV
  • @payloadcms/plugin-multi-tenant, npmfrom 4.0.0-canary.0, fixed in 4.0.0-canary.34OSV

References 5