{"id":"CVE-2026-50143","revision":"6f786c34d6a440ddac4b4131a3415d72","records":[{"revision":"6f786c34d6a440ddac4b4131a3415d72","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-50143","aliases":[],"title":"Actor MCP path authority injection leaks Apify token","description":"The Apify MCP server enables AI agents to extract data from websites using ready-made scrapers, crawlers, and automation tools available on the Apify Store. Prior to 0.10.11, getActorMCPServerURL in src/mcp/actors.ts concatenates the trusted Actor standby URL with the attacker-controlled webServerMcpPath from an Actor definition without verifying the resulting origin, allowing a malicious Actor publisher to use a userinfo-style authority value to redirect connectMCPClient to a third-party host. The call-actor, fetch-actor-details, and actor-mcp tool-loading paths pass this URL to transports in src/mcp/client.ts that attach the victim Authorization bearer token, exposing the Apify API token and enabling access to Actors, stored data, and billable compute. A victim must invoke or inspect the attacker-controlled Actor. This issue is fixed in version 0.10.11.","state":0,"publishedAt":"2026-08-18T17:51:18.888+00:00","modifiedAt":"2026-08-18T19:30:31.747+00:00","affected":[{"ecosystem":"Vendor product","name":"apify-mcp-server","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"apify\",\n                    \"product\": \"apify-mcp-server\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.10.11\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","score":8.1,"severity":"HIGH"}],"references":["https://github.com/apify/apify-mcp-server/security/advisories/GHSA-6gr2-qh89-hxwm","https://github.com/apify/apify-mcp-server/pull/927","https://github.com/apify/apify-mcp-server/commit/ef686d77da3d3c86c30b2ae24218d756aa38e09c","https://github.com/apify/apify-mcp-server/releases/tag/v0.10.11"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-50143","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-50143","identifiers":["CVE-2026-50143"]},"retained":false,"historicalAffected":[]}],"coverage":[]}