CVE-2026-15738
5.8
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
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Amazon | aws-load-balancer-controller | 0 < 3.4.2 | affected |
Weaknesses
- CWE-653: CWE-653 Improper isolation or compartmentalization
References
- https://github.com/kubernetes-sigs/aws-load-balancer-controller/releases/tag/v3.4.2
- https://aws.amazon.com/security/security-bulletins/2026-055-aws/
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