CVE-2026-86831
Improper validation of pod identifier uniqueness in aws-network-policy-agent in Amazon EKS
CVSS Score
8.7
EPSS Score
0.0%
EPSS Percentile
0th
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).
| CWE | CWE-1289 |
| Vendor | aws |
| Product | aws-network-policy-agent |
| Published | Sep 16, 2026 |
| Last Updated | Sep 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
AWS / aws-network-policy-agent
0 < 1.4.0
AWS / amazon-vpc-cni-k8s
1.14.0 < 1.22.4
References
github.com: https://github.com/aws/amazon-vpc-cni-k8s/releases/tag/v1.22.4 github.com: https://github.com/aws/aws-network-policy-agent/releases/tag/v1.4.0 staging.prod.website.marketing.aws.dev: https://staging.prod.website.marketing.aws.dev/security/security-bulletins/2026-113-aws/ github.com: https://github.com/aws/aws-network-policy-agent/security/advisories/GHSA-7xv7-8r3j-3j25 github.com: https://github.com/aws/amazon-vpc-cni-k8s/security/advisories/GHSA-gjc7-c7mx-x8f3