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TI-2026-68478 Aliases CVE-2026-105806GHSA-2q76-m6w6-qgc6

Payload MCP plugin lets users manage API keys outside their account

Priority LOW 37CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-862.

Summary

The @payloadcms/plugin-mcp package for Payload, a headless content management system, is affected from 3.61.0 before 3.88.0. A missing authorization check (CWE-862) lets an authenticated user manage MCP API keys outside their own account. An attacker can use this to escalate privileges through account takeover.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00252 16th percentileScored 2026-11-07
Fix Fixed payload (payloadcms): 3.88.0plugin-mcp (@payloadcms): 3.88.0+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
payloadcmspayload3.61.0 to before 3.88.03.88.0Patch availableCNA
payloadcmsplugin-mcp3.61.0 to before 3.88.03.88.0Patch availableCNA
—@payloadcms/plugin-mcp (npm)3.61.0 to before 3.88.03.88.0Patch availableGHSA-2q76-m6w6-qgc6
  • payload Vendorpayloadcms Affected 3.61.0 to before 3.88.0 Fixed in 3.88.0 Patch available CNA
  • plugin-mcp Vendorpayloadcms Affected 3.61.0 to before 3.88.0 Fixed in 3.88.0 Patch available CNA
  • @payloadcms/plugin-mcp (npm) Vendor— Affected 3.61.0 to before 3.88.0 Fixed in 3.88.0 Patch available GHSA-2q76-m6w6-qgc6

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:payloadcms:payload:*:*:*:*:*:*:*:*——payloadcms
  • cpe:2.3:a:payloadcms:payload:*:*:*:*:*:*:*:* Versions — — ·payloadcms

Remediation

Update @payloadcms/plugin-mcp to version 3.88.0, which fixes the flaw. The sources list no fixed version for payload.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA payload (payloadcms) Fixed in 3.88.0
  • Fix · CNA plugin-mcp (@payloadcms) Fixed in 3.88.0
  • Fix · GHSA-2q76-m6w6-qgc6 @payloadcms/plugin-mcp (npm) Fixed in 3.88.0 Advisory →

Timeline

  1. 2026-10-06 Threatist record created from CVE-2026-105806
  2. 2026-10-06 CISA SSVC decision points changed
  3. 2026-10-06 Priority changed: MEDIUM → LOW
  4. 2026-10-06 Alias added: GHSA-2q76-m6w6-qgc6
  5. 2026-10-06 Fix available: npm/@payloadcms/[email protected] · GHSA-2q76-m6w6-qgc6
  6. 2026-10-06 CVSS score added · GHSA-2q76-m6w6-qgc6
  7. 2026-10-06 Weakness changed · GHSA-2q76-m6w6-qgc6
  8. 2026-10-06 4 new references · GHSA-2q76-m6w6-qgc6

References

Other 4

  • TI-2026-10166 PayloadCMS 3.84.1 - Authenticated account lockout bypass through default unlock access CVSS 4.0MEDIUM 5.3
  • TI-2026-20653 Payload has an SQL Injection in JSON/RichText Queries on PostgreSQL/SQLite Adapters CVSS 3.1CRITICAL 9.8
  • TI-2026-68608 Payload CMS lets attackers update collection documents CVSS 3.1CRITICAL 9.8
  • TI-2026-68606 Remote code execution in Payload Form Builder plugin CVSS 3.1CRITICAL 10.0
  • TI-2026-68480 SQL injection in Payload SQLite and Postgres adapters CVSS 3.1CRITICAL 9.8
  • TI-2026-68479 Prototype pollution in Payload Import Export plugin CVSS 4.0CRITICAL 9.3
See all 43 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences