CVE-2026-15738
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 Jul 14, 2026
- CVSS 5.8 medium
- 0.6% chance of exploitation in the next 30 days (EPSS)
- A fix is available