CVE-2026-15738
Cross-namespace traffic interception via incorrect route precedence ordering in AWS Load Balancer Controller
CVSS Score
8.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-653 |
| Vendor | amazon |
| Product | aws-load-balancer-controller |
| Published | Jul 14, 2026 |
| Last Updated | Jul 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Amazon / aws-load-balancer-controller
0 < 3.4.2