CVE-2026-53718: Envoy Gateway custom backendRef cross-namespace ReferenceGrant bypass

Ghostwire Analysis — What This Means Practically

• Medium CVSS score indicates moderate risk — exploitation requires specific conditions or results in limited impact.
• Exploit code is reported to be available, increasing the likelihood of active exploitation.

This analysis is generated by Ghostwire from NVD, CISA KEV, EPSS, and open-source intelligence data. Verify findings through primary sources before acting.