CVE-2026-122266
Improper isolation of shared resources in aws-network-policy-agent in Amazon EKS
CVSS Score
8.7
EPSS Score
0.0%
EPSS Percentile
0th
Improper isolation of shared resources in aws-network-policy-agent in Amazon EKS Network Policy Agent before 1.3.7 (VPC CNI before 1.22.3) might allow an authenticated adjacent user to bypass NetworkPolicy ingress enforcement on co-located pods via eBPF conntrack map poisoning using crafted AF_PACKET frames. To remediate this issue, users should upgrade to Amazon VPC CNI Managed Add-on v1.22.3 or later (which includes Network Policy Agent v1.3.7).
| CWE | CWE-1189 |
| Vendor | aws |
| Product | aws-network-policy-agent |
| Published | Nov 4, 2026 |
| Last Updated | Nov 4, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
AWS / aws-network-policy-agent
0 < 1.3.7
AWS / amazon-vpc-cni-k8s
0 < 1.22.3
References
github.com: https://github.com/aws/aws-network-policy-agent/releases/tag/v1.3.7 github.com: https://github.com/aws/amazon-vpc-cni-k8s/releases/tag/v1.22.3 aws.amazon.com: https://aws.amazon.com/security/security-bulletins/2026-170-aws/ github.com: https://github.com/aws/aws-network-policy-agent/security/advisories/GHSA-mm5f-ggvx-hmvw