Improper Authentication

Overview Affected versions of this package are vulnerable to Improper Authentication via the unauthenticated router-key and mcp-init-host paths. An attacker can gain unauthorized access or bypass authentication controls by sending crafted requests to these endpoints. Remediation Upgrade...

Improper Authentication

Overview Affected versions of this package are vulnerable to Improper Authentication via the unauthenticated router-key and mcp-init-host paths. An attacker can gain unauthorized access or bypass authentication controls by sending crafted requests to these endpoints. Remediation Upgrade...

Improper Authentication

Overview Affected versions of this package are vulnerable to Improper Authentication via the unauthenticated router-key and mcp-init-host paths. An attacker can gain unauthorized access or bypass authentication controls by sending crafted requests to these endpoints. Remediation Upgrade...

Improper Authentication

Overview Affected versions of this package are vulnerable to Improper Authentication via the unauthenticated router-key and mcp-init-host paths. An attacker can gain unauthorized access or bypass authentication controls by sending crafted requests to these endpoints. Remediation Upgrade...

GO-2026-5390 MCP Gateway: Authority-injection and JWT/session bypass via the unauthenticated router hair-pin "router-key" / "mcp-init-host" path in github.com/Kuadrant/mcp-gateway

MCP Gateway: Authority-injection and JWT/session bypass via the unauthenticated router hair-pin "router-key" / "mcp-init-host" path in github.com/Kuadrant/mcp-gateway...

GHSA-G53W-W6MJ-HRPP MCP Gateway: Authority-injection and JWT/session bypass via the unauthenticated router hair-pin "router-key" / "mcp-init-host" path

Summary The MCP router extproc exposes an initialize-method code path that, when a request carries an mcp-init-host header, bypasses the gateway JWT session validator and rewrites the upstream :authority header to whatever the caller chooses, gated only by a single shared header value router-key...

MCP Gateway: Authority-injection and JWT/session bypass via the unauthenticated router hair-pin "router-key" / "mcp-init-host" path

Summary The MCP router extproc exposes an initialize-method code path that, when a request carries an mcp-init-host header, bypasses the gateway JWT session validator and rewrites the upstream :authority header to whatever the caller chooses, gated only by a single shared header value router-key...

PT-2026-45070

Summary The MCP router ext proc exposes an initialize-method code path that, when a request carries an mcp-init-host header, bypasses the gateway JWT session validator and rewrites the upstream :authority header to whatever the caller chooses, gated only by a single shared header value router-key...