All vulnerabilities
CVE-2026-105851GHSA-vc4h-q48j-5hcx

Payload: Field access control bypass on auth collections

payloadcms payloadnpmLibraries & packages
Open in ThreatlineRecord JSON
CVSS
9.3Critical
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.25%Chance of exploitation activity in the next 30 days, higher than 15% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in3.90.0Also 4.0.0-canary.34GitHub
Published6 Oct 2026Updated 6 Oct 2026CVE List

What fixes it

  • 3.90.0payload, npmGitHubnpm install payload@3.90.0
  • 4.0.0-canary.34payload, npmGitHubnpm install payload@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

Payload's duplicate operation copies field values from the source document even when a field is hidden, or its access.read or access.create rule would reject the value for that caller.

The disableDuplicate collection setting, enabled by default on auth collections, did not stop this.

Patches

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

Workarounds

Add a beforeDuplicate field hook to fields and set the value to empty or your default value.

Text from GitHub Advisory Database

Affected versions 4

  • payload, npm> 3.0.0, < 3.90.0GitHub
  • payload, npm> 4.0.0-canary.0, < 4.0.0-canary.34GitHub
  • payloadaffected: > 3.0.0, < 3.90.0CVE List
  • payloadaffected: > 4.0.0-canary.0, < 4.0.0-canary.34CVE List

References 4