{"schema":"threatline.record/2","record":{"id":"CVE-2026-105806","aliases":["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.","categories":["Libraries & packages"],"product":"@payloadcms/plugin-mcp","vendor":"payloadcms","ecosystem":"npm","affected_ranges":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-2q76-m6w6-qgc6","source_modified_at":"2026-10-06T16:09:33Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"@payloadcms/plugin-mcp"},"range":">= 3.61.0, < 3.88.0"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-105806","source_modified_at":"2026-10-06T17:39:44.197Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"payload","vendor":"payloadcms","versions":[{"version":">= 3.61.0, < 3.88.0","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-105806","source_modified_at":"2026-10-06T17:39:44.197Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"plugin-mcp","vendor":"@payloadcms","versions":[{"version":">= 3.61.0, < 3.88.0","status":"affected"}],"defaultStatus":null},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-2q76-m6w6-qgc6","source_modified_at":"2026-10-06T16:15:05.314931440Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"@payloadcms/plugin-mcp","purl":"pkg:npm/%40payloadcms/plugin-mcp"},"ranges":[{"events":[{"introduced":"3.61.0"},{"fixed":"3.88.0"}],"type":"SEMVER"}],"versions":[]}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-2q76-m6w6-qgc6","source_modified_at":"2026-10-06T16:09:33Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"@payloadcms/plugin-mcp"},"version":"3.88.0"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-2q76-m6w6-qgc6","source_modified_at":"2026-10-06T16:15:05.314931440Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"@payloadcms/plugin-mcp","purl":"pkg:npm/%40payloadcms/plugin-mcp"},"version":"3.88.0"}],"cvss":8.6,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00252,"percentile":0.15751,"score_date":"2026-10-23"},"published_at":"2026-10-06T15:35:17.028Z","modified_at":"2026-10-06T17:39:44.197Z","provenance":[{"source":"GitHub Advisory Database","url":"https://github.com/advisories/GHSA-2q76-m6w6-qgc6","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-06T16:09:33Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-105806","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-06T17:39:44.197Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-2q76-m6w6-qgc6","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-06T16:15:05.314931440Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-105806","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["GitHub Advisory Database","CVE List","OSV","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/payloadcms/payload/security/advisories/GHSA-2q76-m6w6-qgc6","tags":["x_refsource_CONFIRM"]},{"source":"CVE List","url":"https://github.com/payloadcms/payload/commit/025581d8c5ed836039ad85397288a30f0d3c11c1","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/payloadcms/payload/releases/tag/v3.88.0","tags":["x_refsource_MISC"]},{"url":"https://github.com/advisories/GHSA-2q76-m6w6-qgc6","source":"GitHub Advisory Database"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-06T17:34:09.694438Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"ecosystem","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-06T17:39:44.197Z","content_hash":"e72ccb38af2800c47ef8ba2ff665ae3a3c5d5d9f5db1601929899e758ca7a852"}}