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CVE-2026-105806: CWE-862: Missing Authorization in payloadcms payload

0
High
VulnerabilityCVE-2026-105806cvecve-2026-105806cwe-862gcveosvghsa-2q76-m6w6-qgc6ghsanpm
Published: 10/06/2026 (10/06/2026, 16:09:31 UTC)
Source: CVE Database V5
Vendor/Project: payloadcms
Product: payload

Description

### Impact Under certain conditions, an authenticated user could manage MCP API keys outside their intended account allowing an attacker to escalate privileges through account takeover. Applications that do not use `@payloadcms/plugin-mcp` are not affected. ### Patches Users should upgrade to `@payloadcms/plugin-mcp` version `3.88.0` or later. ### Workarounds Upgrading is recommended. Until then, disable the MCP plugin or restrict MCP API-key management to trusted users.

CVSS v4.0

Score 8.6high

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
High
Vuln. Integrity
High
Vuln. Availability
None
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Affected software

payloadcms

payload

Affected versions
>=3.61.0 <3.88.0

@payloadcms

plugin-mcp

Affected versions
>=3.61.0 <3.88.0
GitHub Actionsmore threats →ai
payloadcms/payload
pkg:github/payloadcms/payload
Affected versions
>=3.61.0 <3.88.0

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 10/06/2026, 16:03:13 UTC

Technical Analysis

CVE-2026-105806 is a missing authorization vulnerability (CWE-862) in the @payloadcms/plugin-mcp component of PayloadCMS. Authenticated users in versions 3.61.0 through 3.87.x can manipulate MCP API keys belonging to other accounts, enabling privilege escalation via account takeover. This vulnerability is fixed in version 3.88.0.

Potential Impact

An attacker with valid authentication can escalate privileges by managing API keys of other accounts, potentially taking over those accounts. This compromises account integrity and could lead to unauthorized access to sensitive data or administrative functions within PayloadCMS.

Mitigation Recommendations

Upgrade to version 3.88.0 or later, where this vulnerability is fixed. No other mitigations are indicated by the vendor advisory.

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Technical Details

Data Version
5.2
Assigner Short Name
GitHub_M
Date Reserved
2026-10-05T20:37:19.365Z
Cvss Version
4.0
State
PUBLISHED

Threat ID: 6ac518762cdf04f656c008b9

Added to database: 10/06/2026, 15:49:10 UTC

Last enriched: 10/06/2026, 16:03:13 UTC

Last updated: 10/06/2026, 21:42:12 UTC

Views: 19

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