VULNRABLE / Vulnerability / CVE-2026-111770
CVE-2026-111770
HIGH LOW @modelcontextprotocol/server GHSA
Exploit verdict: No active-exploit signal
CVSS Score
8
Severity
HIGH
EPSS
—
Source
GHSA
Summary
MCP TypeScript server SDK: Shared transport or server instances delivered one HTTP client's messages to another
What this means
CVE-2026-111770 is a high-severity vulnerability affecting @modelcontextprotocol/server, rated CVSS 8. Published October 20, 2026.
View full advisory at GHSA →