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Advisory record · GHSA-xhm9-gwgw-3q2q

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

CVSS 5.3 MediumEPSS 0.0020 · 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-xhm9-gwgw-3q2q · CVE-2026-105864
Weakness (CWE)
CWE-863
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 package is affected in versions below 3.90.0 and from 4.0.0-canary.0 up to but not including 4.0.0-canary.34. An authenticated user restricted to one tenant could create a record in a different tenant, though reads and direct edits to existing documents in the target tenant were not bypassed. Users should upgrade to 3.90.0 or 4.0.0-canary.34 or later; the source also suggests adding access control with accessResultOverride on the multi-tenant collection config as a workaround.

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
5.3 Medium 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0020, 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.