Answer in brief
CVE-2026-86831 records a Unknown severity vulnerability in Improper validation of pod identifier uniqueness in aws-network-policy-agent in Amazon EKS. The current sources do not mark it as known exploited. The current feed maps AWS/amazon-vpc-cni-k8s (generic), AWS/aws-network-policy-agent (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps AWS/amazon-vpc-cni-k8s (generic), AWS/aws-network-policy-agent (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| AWS/amazon-vpc-cni-k8sgeneric | >=1.14.0 <1.22.4 | 1.22.4 |
| AWS/aws-network-policy-agentgeneric | >=0 <1.4.0 | 1.4.0 |
Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 16, 2026
Improper validation of pod identifier uniqueness in aws-network-policy-agent in Amazon EKS Network Policy Agent before v1.4.0 might allow an authenticated remote user to bypass NetworkPolicy enforcement on co-located pods in other namespaces via crafted pod and namespace names that produce pod identifier collisions. To remediate this issue, users should upgrade to Amazon EKS Network Policy Agent 1.4.0 or later and Amazon VPC CNI Managed Add-on v1.22.4 or later (which includes Network Policy Agent v1.4.0).
Quoted source text, attributed separately from HOL analysis.