VULNERABILITY INTELLIGENCE
CVE-2026-30618
CVSS score9.8 CRITICAL
EPSS probability1.20%
CISA KEVNot currently listed
Published2026-07-15
Last modified2026-07-16
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-94