CVE-2026-15738

Published: Jul 14, 2026Modified: Jul 15, 2026

5.8

Vector

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5 (Secondary)

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.

Related CWEs

CWE-653

Improper Isolation or Compartmentalization

The product does not properly compartmentalize or isolate functionality, processes, or resources that require different privilege levels, rights, or permissions.

References (2)

https://aws.amazon.com/security/security-bulletins/2026-055-aws/

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5

https://github.com/kubernetes-sigs/aws-load-balancer-controller/releases/tag/v3.4.2

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5

Timeline

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