CVE-2026-15738mediumCWE-653

CVE-2026-15738: medium-severity vulnerability in Amazon aws-load-balancer-controller

Cross-namespace traffic interception via incorrect route precedence ordering in AWS Load Balancer Controller

Published · Updated

Follow this CVE+ Monitor aws-load-balancer-controller

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.8epss 0.6%
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.
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
Affected products
Amazon · aws-load-balancer-controller