CVE-2026-122266 Improper isolation of shared resources in aws-network-policy-agent in Amazon EKS
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-122266?
CVE-2026-122266 is a medium-severity vulnerability in AWS amazon-vpc-cni-k8s, published on 4 Nov 2026.
Official description
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).
Weakness: CWE-1189
Which versions are affected by CVE-2026-122266?
How do I fix CVE-2026-122266?
No fix has been published for CVE-2026-122266 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-122266 being exploited?
There is no known exploitation of CVE-2026-122266 in the wild and no public exploit code.