PT-2026-60311 · Xszyou · Fay

Published 2026-07-15 · Updated 2026-07-16 · CVE-2026-30618

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions xszyou Fay version 4.3.1

Description Remote code execution is possible via the MCP STDIO server management and command execution handling. A remote attacker can access the publicly exposed MCP management interface to configure an MCP STDIO server using attacker-controlled commands and parameters, leading to the execution of arbitrary commands within the context of the Fay service.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-30618

Affected Products

Fay

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-30618 · Security Note
• https://github.com/xszyou/Fay · Note
• https://ox.security/blog/mcp-supply-chain-advisory-rce-vulnerabilities-across-the-ai-ecosystem · Note
• https://twitter.com/VulmonFeeds/status/2077608309746487532 · Twitter Post