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CVE-2026-105806

Payload: Improper access control for MCP API keys

HIGH
8.6
CVSS Score
Published: October 6, 2026 at 03:35 PM UTC
Updated: October 6, 2026 at 08:03 PM UTC
2 products affected across 1 vendorPayloadPlugin Mcp

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Severity
HIGH8.6
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.6HIGHGitHub_M
Vector?

Quick Info

StatusUNDERGOING ANALYSIS
CWE
CWE-862

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