Payload is a free and open source headless content management system. In @payloadcms/plugin-mcp versions from 3.61.0 until 3.88.0, an authenticated user can manage MCP API keys outside the intended account, enabling privilege escalation through account takeover. This issue is fixed in version 3.88.0.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 3
https://github.com/payloadcms/payload/commit/025581d8c5ed836039ad85397288a30f0d…
security-advisories@github.com
https://github.com/payloadcms/payload/releases/tag/v3.88.0
security-advisories@github.com
https://github.com/payloadcms/payload/security/advisories/GHSA-2q76-m6w6-qgc6
security-advisories@github.com