Is github.com/Kuadrant/mcp-gateway affected by GHSA-g53w-w6mj-hrpp?

Go github.com/Kuadrant/mcp-gateway is affected in <=0.6.1.

Is GHSA-g53w-w6mj-hrpp being exploited?

Not on the CISA KEV list. EPSS exploit probability is not available.

critical

GHSA-g53w-w6mj-hrpp

Q: Is GHSA-g53w-w6mj-hrpp being exploited?

Not on the CISA KEV list. EPSS exploit probability is not available.

Go · github.com/Kuadrant/mcp-gateway

Summary

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

Severity: critical
Published: 2026-05-19

References

https://github.com/Kuadrant/mcp-gateway/security/advisories/GHSA-g53w-w6mj-hrpp
https://github.com/Kuadrant/mcp-gateway

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.