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CVE-2026-105806 ยท GHSA-2q76-m6w6-qgc6

Payload: Improper access control for MCP API keys

Risk score
60/100
CVSS
8.6 v4.0
Exploit chance (30 days)
0.3%
Published
6 Oct 2026

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What to know

What it is
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
@payloadcms/plugin-mcp (npm) >= 3.61.0, < 3.88.0
Fix
Upgrade @payloadcms/plugin-mcp to 3.88.0 or later.
Exploitation
No known exploitation

Why it is Yellow

  • CVSS 8.6 high
  • On your watchlist: npm

Affected packages

PackageEcosystemVulnerableFixed in
@payloadcms/plugin-mcpnpm>= 3.61.0, < 3.88.03.88.0

References

Original description

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.

Last activity 6 Oct 2026. Patch Forecast updates every hour.