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AWS Security BulletinsCVE-2026-86831

CVE-2026-86831: Improper validation of pod identifier uniqueness in aws-network-policy-agent in Amazon EKS

Severity not listed 1 CVE Published Sep 16, 2026 at 8:16 PM UTC

Summary

Bulletin ID: 2026-113-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 09/16/2026 12:30 PM PDT Description: Network Policy Agent is an EKS Policy management feature. We identified CVE-2026-86831, a cross-namespace NetworkPolicy bypass in Amazon EKS Network Policy Agent (aws-network-policy-agent) before v1.4.0.

Pod identifiers are constructed by concatenating the pod name and namespace with a hyphen delimiter, which is a legal character in both Kubernetes pod names and namespace names. This ambiguity can produce identical identifiers for pods across different namespaces, potentially allowing NetworkPolicy enforcement to be bypassed. Impacted versions: - 1.14.0

Products covered

A separate affected-products list was not included in the collected bulletin.

Remediation

Separate remediation guidance was not included in the collected bulletin.

CVEs in this advisory 1

Updates

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