{"id":"GHSA-2q76-m6w6-qgc6","summary":"Payload: Improper access control for MCP API keys","details":"### Impact\nUnder certain conditions, an authenticated user could manage MCP API keys outside their intended account allowing an attacker to escalate privileges through account takeover.\n\nApplications that do not use `@payloadcms/plugin-mcp` are not affected.\n\n### Patches\nUsers should upgrade to `@payloadcms/plugin-mcp` version `3.88.0` or later.\n\n### Workarounds\nUpgrading is recommended. Until then, disable the MCP plugin or restrict MCP API-key management to trusted users.","aliases":["CVE-2026-105806"],"modified":"2026-10-06T16:15:05.199029490Z","published":"2026-10-06T16:09:31Z","database_specific":{"nvd_published_at":null,"cwe_ids":["CWE-862"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2026-10-06T16:09:31Z"},"references":[{"type":"WEB","url":"https://github.com/payloadcms/payload/security/advisories/GHSA-2q76-m6w6-qgc6"},{"type":"WEB","url":"https://github.com/payloadcms/payload/commit/025581d8c5ed836039ad85397288a30f0d3c11c1"},{"type":"PACKAGE","url":"https://github.com/payloadcms/payload"},{"type":"WEB","url":"https://github.com/payloadcms/payload/releases/tag/v3.88.0"}],"affected":[{"package":{"name":"@payloadcms/plugin-mcp","ecosystem":"npm","purl":"pkg:npm/%40payloadcms/plugin-mcp"},"ranges":[{"type":"SEMVER","events":[{"introduced":"3.61.0"},{"fixed":"3.88.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-2q76-m6w6-qgc6/GHSA-2q76-m6w6-qgc6.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}