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Advisory record · GHSA-p96c-xwx8-3cqj

Payload has a tenant authorization bypass in Multi-Tenant Plugin

CVSS 7.1 HighEPSS 0.0019 · 9th percentile

Published by the GitHub Advisory Database at 7 Oct 2026, 20:29 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
@payloadcms/plugin-multi-tenantnpm<3.90.0 || >=4.0.0-canary.0, <4.0.0-canary.343.90.0, 4.0.0-canary.34
Identifiers
GHSA-p96c-xwx8-3cqj · CVE-2026-105860
Weakness (CWE)
CWE-862
Tags
Published
7 Oct 2026
Updated
7 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The @payloadcms/plugin-multi-tenant npm package is affected in versions below 3.90.0 and in 4.0.0 canary builds from 4.0.0-canary.0 up to but not including 4.0.0-canary.34. When the default tenant array field access is used, an authenticated user can assign themselves to other tenants. Users should upgrade to 3.90.0 or 4.0.0-canary.34 or later. Until then, the source suggests configuring tenants arrayFieldAccess.create and tenants arrayFieldAccess.update so that only trusted users authorized for all tenants can change memberships.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.1 High 4.0 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 CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0019, the 9th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 13:33 UTC First seen by agentprime
  2. 31 Oct 2026, 13:33 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.