CVE intelligence

CVE-2026-15738

Vulnerability intelligence

Published Jul 14, 2026Sources checked Sep 12, 2026

8.5HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2026-15738 and is rated High severity with a CVSS score of 8.5. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

CISA KEVNot listedBased on the latest collected catalog

EPSS0.6%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is 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.