CVE-2026-105806: @payloadcms Plugin-Mcp

High severity, CVSS 8.6. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• @payloadcms Plugin-Mcp: from 3.61.0, before 3.88.0 (fixed in 3.88.0)
• Payloadcms Payload: from 3.61.0, before 3.88.0 (fixed in 3.88.0)

Published 2026-10-06. Last modified 2026-10-06.