{"id":"CVE-2026-30618","aliases":["EUVD-2026-44845","GHSA-84x8-v67g-jc27"],"status":"published","title":"xszyou Fay 4.3.1 contains a remote code execution vulnerability in its MCP STDIO server...","description":"xszyou Fay 4.3.1 contains a remote code execution vulnerability in its MCP STDIO server management and command execution handling. A remote attacker can access the publicly exposed MCP management interface and configure an MCP STDIO server with attacker-controlled commands and parameters, resulting in execution of arbitrary commands on the server. Successful exploitation allows arbitrary command execution within the context of the Fay service.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.01198,"percentile":0.68375,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-94"],"published":"2026-07-15T00:00:00Z","modified":"2026-07-16T15:34:07Z","references":[{"url":"https://www.ox.security/blog/mcp-supply-chain-advisory-rce-vulnerabilities-across-the-ai-ecosystem/"},{"url":"https://github.com/xszyou/Fay"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-30618"},{"url":"https://www.ox.security/blog/mcp-supply-chain-advisory-rce-vulnerabilities-across-the-ai-ecosystem"},{"url":"https://github.com/advisories/GHSA-84x8-v67g-jc27"}],"sources":{"cve":[{"id":"CVE-2026-30618","description":"xszyou Fay 4.3.1 contains a remote code execution vulnerability in its MCP STDIO server management and command execution handling. A remote attacker can access the publicly exposed MCP management interface and configure an MCP STDIO server with attacker-controlled commands and parameters, resulting in execution of arbitrary commands on the server. Successful exploitation allows arbitrary command execution within the context of the Fay service.","status":"published","published":"2026-07-15T00:00:00Z","modified":"2026-07-16T13:24:00.406Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T13:43:56.024247Z"}],"euvd":[{"id":"EUVD-2026-44845","description":"xszyou Fay 4.3.1 contains a remote code execution vulnerability in its MCP STDIO server management and command execution handling. A remote attacker can access the publicly exposed MCP management interface and configure an MCP STDIO server with attacker-controlled commands and parameters, resulting in execution of arbitrary commands on the server. Successful exploitation allows arbitrary command execution within the context of the Fay service.","status":"published","published":"2026-07-15T00:00:00Z","modified":"2026-07-16T13:24:00Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T18:19:51.881225Z"}],"ghsa":[{"id":"GHSA-84x8-v67g-jc27","title":"xszyou Fay 4.3.1 contains a remote code execution vulnerability in its MCP STDIO server...","description":"xszyou Fay 4.3.1 contains a remote code execution vulnerability in its MCP STDIO server management and command execution handling. A remote attacker can access the publicly exposed MCP management interface and configure an MCP STDIO server with attacker-controlled commands and parameters, resulting in execution of arbitrary commands on the server. Successful exploitation allows arbitrary command execution within the context of the Fay service.","status":"published","published":"2026-07-16T00:31:33Z","modified":"2026-07-16T15:34:07Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T15:09:33.90316Z"}],"nvd":[{"id":"CVE-2026-30618","description":"xszyou Fay 4.3.1 contains a remote code execution vulnerability in its MCP STDIO server management and command execution handling. A remote attacker can access the publicly exposed MCP management interface and configure an MCP STDIO server with attacker-controlled commands and parameters, resulting in execution of arbitrary commands on the server. Successful exploitation allows arbitrary command execution within the context of the Fay service.","status":"published","published":"2026-07-15T22:16:46.21Z","modified":"2026-07-16T14:16:49.86Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:12:30.250437Z"}]}}