# CVE-2026-15738

## Summary

- **CVE ID:** CVE-2026-15738
- **Severity:** MEDIUM
- **CVSS Score:** 8.5 (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)
- **CWE:** CWE-653
- **Published:** Jul 14, 2026
- **Last Modified:** Jul 15, 2026

## 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.

## Affected Products

- Amazon — aws-load-balancer-controller (0)

## References

- [CNA](https://github.com/kubernetes-sigs/aws-load-balancer-controller/releases/tag/v3.4.2)
- [CNA](https://aws.amazon.com/security/security-bulletins/2026-055-aws/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.65%
- **EPSS Percentile:** 48.8

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._