CVE-2026-105806
Payload: Improper access control for MCP API keys
HIGH 8.6
At a glance
- Source
- NVD
- EPSS
- EPSS 0.25 % · percentile 17 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Undergoing Analysis
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.
Weaknesses (CWE)
- CWE-862 — Missing Authorization
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 4.0 | HIGH 8.6 | 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 | GitHub_M |
| CVSS 4.0 | HIGH 8.6 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD · security-advisories@github.com (Secondary) |
Advisories
- GHSA-2q76-m6w6-qgc6 — Payload: Improper access control for MCP API keys
European references
- ENISA EUVD · EUVD-2026-93469
- GCVE · GCVE-0-2026-105806
Affected products
| Product | Versions |
|---|---|
| payloadcms · payload | affected >= 3.61.0, < 3.88.0 |
| @payloadcms · plugin-mcp | affected >= 3.61.0, < 3.88.0 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |