CVE-2026-105863
Published:October 06, 2026
Updated:October 10, 2026
Payload is a free and open source headless content management system. In versions after 3.0.0 and before 3.90.0, a custom field option that maps a field to a reserved authentication claim name can place unintended values in the authentication token issued at login. This issue is fixed in version 3.90.0.
Affected Packages
https://github.com/payloadcms/payload.git (GITHUB):
Affected version(s) >=v3.0.0 <v3.90.0Fix Suggestion:
Update to version v3.90.0payload (NPM):
Affected version(s) >=3.0.0 <3.90.0Fix Suggestion:
Update to version 3.90.0payload (NPM):
Affected version(s) >=3.0.0 <3.90.0Fix Suggestion:
Update to version 3.90.0payload (NPM):
Affected version(s) >=4.0.0-canary.0 <4.0.0-canary.34Fix Suggestion:
Update to version 4.0.0-canary.34Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
EPSS
Base Score:
0.39