Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-15738— Cross-namespace traffic interception via incorrect route precedence ordering in AWS Load Balancer Controller

Quick assessment

Affected
Amazon aws-load-balancer-controller
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Amazon AWS Load Balancer Controller是美国Amazon公司的一款负载均衡控制器。 Amazon AWS Load Balancer Controller 3.4.2之前版本存在权限许可和访问控制问题漏洞，该漏洞源于Gateway API监听器规则生成中的行为顺序不正确，可能导致经过身份验证的远程用户通过特制HTTPRoute资源拦截、欺骗或拒绝共享网关上其他命名空间的gRPC流量。

CVSS 8.5 · High EPSS 0.65% · P50

Affected Version Matrix 1

VendorProduct Version RangeStatus
Amazon aws-load-balancer-controller < 3.4.2 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-15738

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Cross-namespace traffic interception via incorrect route precedence ordering in AWS Load Balancer Controller
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的划分
Source: CVE Program / CVE List V5
Vulnerability Title
Amazon AWS Load Balancer Controller 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Amazon AWS Load Balancer Controller是美国Amazon公司的一款负载均衡控制器。 Amazon AWS Load Balancer Controller 3.4.2之前版本存在权限许可和访问控制问题漏洞，该漏洞源于Gateway API监听器规则生成中的行为顺序不正确，可能导致经过身份验证的远程用户通过特制HTTPRoute资源拦截、欺骗或拒绝共享网关上其他命名空间的gRPC流量。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Amazon aws-load-balancer-controller 0 ~ 3.4.2 -

II. Public POCs for CVE-2026-15738

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 9451 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-15738

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-15738 (1)

Vendor Advisories for CVE-2026-15738 (1)

IV. Related Vulnerabilities

Same vendor: Amazon
Same weakness: CWE-653

V. Comments for CVE-2026-15738

No comments yet

Leave a comment