---
title: "CVE-2026-86831: Amazon EKS Network Policy Agent - Broken Access Control"
description: "Amazon EKS Network Policy Agent < 1.4.0 contains a broken access control caused by improper validation of pod identifier uniqueness, letting authenticated remote users bypass NetworkPolicy enforcement on co-located pods via crafted pod and namespace names."
url: https://panop.io/threat-heartbeat/CVE-2026-86831/
---

# CVE-2026-86831 Amazon EKS Network Policy Agent - Broken Access Control

Amazon EKS Network Policy Agent < 1.4.0 contains a broken access control caused by improper validation of pod identifier uniqueness, letting authenticated remote users bypass NetworkPolicy enforcement on co-located pods via crafted pod and namespace names.

CVSS base score 8.7 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.64% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-86831)

## Details

Type

Broken Access Control

Impact

Broken Access Control

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

Published

16 September 2026

Updated

15 October 2026

Weakness

[CWE-1289](https://cwe.mitre.org/data/definitions/1289.html)

## Vendor fix

Upgrade to Amazon EKS Network Policy Agent 1.4.0 or later and Amazon VPC CNI Managed Add-on v1.22.4 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-86831](https://nvd.nist.gov/vuln/detail/CVE-2026-86831)
- [https://github.com/aws/aws-network-policy-agent/releases/tag/v1.4.0](https://github.com/aws/aws-network-policy-agent/releases/tag/v1.4.0)
- [https://github.com/aws/aws-network-policy-agent/security/advisories/GHSA-7xv7-8r3j-3j25](https://github.com/aws/aws-network-policy-agent/security/advisories/GHSA-7xv7-8r3j-3j25)
- [https://staging.prod.website.marketing.aws.dev/security/security-bulletins/2026-113-aws/](https://staging.prod.website.marketing.aws.dev/security/security-bulletins/2026-113-aws/)
- [https://github.com/aws/amazon-vpc-cni-k8s/releases/tag/v1.22.4](https://github.com/aws/amazon-vpc-cni-k8s/releases/tag/v1.22.4)
- [https://github.com/aws/amazon-vpc-cni-k8s/security/advisories/GHSA-gjc7-c7mx-x8f3](https://github.com/aws/amazon-vpc-cni-k8s/security/advisories/GHSA-gjc7-c7mx-x8f3)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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