{"affected":[{"defaultStatus":"unaffected","product":"aws-network-policy-agent","source":"CNA: AMZN","vendor":"AWS","versions":[{"lessThan":"1.3.7","status":"affected","version":"0","versionType":"custom"}]},{"defaultStatus":"unaffected","product":"amazon-vpc-cni-k8s","source":"CNA: AMZN","vendor":"AWS","versions":[{"lessThan":"1.22.3","status":"affected","version":"0","versionType":"custom"}]}],"cveId":"CVE-2026-122266","cwes":["CWE-1189"],"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.\n\n\n\nTo 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).","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.7,"severity":"high","source":"CNA: AMZN","vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","version":"3.1"},{"score":6.3,"severity":"medium","source":"CNA: AMZN","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","version":"4.0"},{"score":6.3,"severity":"medium","source":"NVD: ff89ba41-3aa1-4d27-914a-91399e9639e5","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":8.7,"severity":"high","source":"NVD: ff89ba41-3aa1-4d27-914a-91399e9639e5","vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","version":"3.1"}],"modifiedAt":1793830676383,"publishedAt":1793828647128,"references":[{"source":"CNA: AMZN","tags":["release-notes","patch"],"url":"https://github.com/aws/aws-network-policy-agent/releases/tag/v1.3.7"},{"source":"CNA: AMZN","tags":["release-notes","patch"],"url":"https://github.com/aws/amazon-vpc-cni-k8s/releases/tag/v1.22.3"},{"source":"CNA: AMZN","tags":["vendor-advisory"],"url":"https://aws.amazon.com/security/security-bulletins/2026-170-aws/"},{"source":"CNA: AMZN","tags":["third-party-advisory"],"url":"https://github.com/aws/aws-network-policy-agent/security/advisories/GHSA-mm5f-ggvx-hmvw"},{"source":"ff89ba41-3aa1-4d27-914a-91399e9639e5","tags":[],"url":"https://aws.amazon.com/security/security-bulletins/2026-170-aws/"},{"source":"ff89ba41-3aa1-4d27-914a-91399e9639e5","tags":[],"url":"https://github.com/aws/amazon-vpc-cni-k8s/releases/tag/v1.22.3"},{"source":"ff89ba41-3aa1-4d27-914a-91399e9639e5","tags":[],"url":"https://github.com/aws/aws-network-policy-agent/releases/tag/v1.3.7"},{"source":"ff89ba41-3aa1-4d27-914a-91399e9639e5","tags":[],"url":"https://github.com/aws/aws-network-policy-agent/security/advisories/GHSA-mm5f-ggvx-hmvw"}],"remediation":[{"kind":"fix","source":"CNA: AMZN","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/aws/aws-network-policy-agent/releases/tag/v1.3.7"},{"kind":"fix","source":"CNA: AMZN","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/aws/amazon-vpc-cni-k8s/releases/tag/v1.22.3"}],"revision":"18448cd4331c3fa00e8a56d1bb1caf74f78ac14f0ab1a2aa03052027377f55d9","sources":[{"modifiedAt":1793829030839,"name":"CNA: AMZN","retrievedAt":1793830369548,"url":"https://www.cve.org/CVERecord?id=CVE-2026-122266"},{"modifiedAt":1793830676383,"name":"NVD","retrievedAt":1793838301179,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-122266"}],"ssvc":null,"status":"published","title":"Improper isolation of shared resources in aws-network-policy-agent in Amazon EKS","updatedAt":1793838301179}