Security Advisory
CVE-2026-15738
8.5
HIGH
Vulnerability Description
Incorrect behavior order in the Gateway API listener-rule generation in Amazon AWS Load Balancer Controller before 3.4.2 might allow an authenticated remote user to intercept, spoof, or deny another namespace's gRPC traffic on a shared Gateway via a crafted HTTPRoute resource.
To mitigate this issue, users should upgrade to version 3.4.2.
Published Date
July 14, 2026
Official Source
NIST NVD Advisory