CVE-2026-105806: Auth Bypass

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.

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Weakness Type (CWE)

CWE-862 Missing Authorization

References

Other References

https://github.com/payloadcms/payload/commit/025581d8c5ed836039ad85397288a30f0d3c11c1 https://github.com/payloadcms/payload/releases/tag/v3.88.0 https://github.com/payloadcms/payload/security/advisories/GHSA-2q76-m6w6-qgc6

Frequently Asked Questions

What is CVE-2026-105806? +

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.

How do I check if I'm vulnerable to CVE-2026-105806? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-105806