CVE-2026-122266

    Dashboard / Vulnerabilities / CVE-2026-122266

    CVE-2026-122266

    Published: 4 Nov 2026Last Modified: 8 Nov 2026

    Summary: Improper isolation of shared resources in aws-network-policy-agent in Amazon EKS

    Details: 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).

    References: https://aws.amazon.com/security/security-bulletins/2026-170-aws/, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/122xxx/CVE-2026-122266.json, https://github.com/aws/amazon-vpc-cni-k8s/security/advisories/GHSA-rp3x-m95q-87mx, https://github.com/aws/aws-network-policy-agent/security/advisories/GHSA-mm5f-ggvx-hmvw, https://nvd.nist.gov/vuln/detail/CVE-2026-122266, https://github.com/aws/amazon-vpc-cni-k8s/releases/tag/v1.22.3, https://github.com/aws/aws-network-policy-agent/releases/tag/v1.3.7

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -f77c395213cb0385373603d2464cf3830be0cd2d

    Affected versions

    v1.22.2
    v1.22.1
    v1.22.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-122266 | CVE-DB