{"id":"CVE-2026-32254","summary":"Kube-router Proxy Module Blindly Trusts ExternalIPs/LoadBalancer IPs Enabling Cluster-Wide Traffic Hijacking and DNS DoS","details":"Kube-router is a turnkey solution for Kubernetes networking. Prior to version 2.8.0, Kube-router's proxy module does not validate externalIPs or loadBalancer IPs before programming them into the node's network configuration. Version 2.8.0 contains a patch for the issue. Available workarounds include enabling DenyServiceExternalIPs feature gate, deploying admission policy, restricting service creation RBAC, monitoring service changes, and applying BGP prefix filtering.","aliases":["GHSA-phqm-jgc3-qf8g","GO-2026-4724"],"modified":"2026-07-08T08:06:23.936110511Z","published":"2026-03-18T03:14:39.392Z","related":["SUSE-SU-2026:1135-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32254.json","cwe_ids":["CWE-284"],"cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/cloudnativelabs/kube-router/releases/tag/v2.8.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32254.json"},{"type":"ADVISORY","url":"https://github.com/cloudnativelabs/kube-router/security/advisories/GHSA-phqm-jgc3-qf8g"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32254"},{"type":"FIX","url":"https://github.com/cloudnativelabs/kube-router/commit/a1f0b2eea3ee0f66b9a5b5c49dcb714619ccd456"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/cloudnativelabs/kube-router","events":[{"introduced":"0"},{"fixed":"0e94d43d4010c2d057c3e1f17c555600dde9fe7f"},{"fixed":"a1f0b2eea3ee0f66b9a5b5c49dcb714619ccd456"}],"database_specific":{"cpe":"cpe:2.3:a:kube-router:kube-router:*:*:*:*:*:kubernetes:*:*","source":["CPE_RANGE","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"2.8.0"}]}}],"versions":["v2.7.0","v2.6.0","v2.5.0","v2.4.0","v2.3.0","v2.2.0","v2.1.1","v2.1.0","v1.6.0","v2.0.0","v1.5.0","v1.4.0","v1.3.1","v1.3.0-rc6","v1.3.0-rc2","v1.3.0-rc1","v1.2.1","v1.2.0","v1.1.1","v1.1.0","v1.1.0-rc1","v1.0.0","v1.0.0-rc6","v1.0.0-rc5","v1.0.0-rc4","v1.0.0-rc3","v1.0.0-rc2","v1.0.0-rc1","v0.4.0-rc3","v0.4.0","v0.4.0-rc2","v0.4.0-rc1","v0.3.2","v0.3.1","v0.3.0","v0.2.5","v0.2.4","v0.2.3","v0.2.2","v0.2.1","v0.2.0","v0.2.0-beta.10","v0.2.0-beta.9","v0.2.0-beta.8","v0.2.0-beta.7","v0.2.0-beta.6","v0.1.0","v0.2.0-beta.5","v0.2.0-beta.4","v0.2.0-beta.3","v0.2.0-beta.2","v0.2.0-beta.1","v0.1.0-rc2","v0.1.0-rc1","v0.0.20","v0.0.19","v0.0.18","v0.0.17","v0.0.16","v0.0.15","v0.0.14","v0.0.13","v0.0.12","v0.0.11","v0.0.10","v0.0.9","v0.0.8","v0.0.7","v0.0.6","v0.0.5","0.0.4","0.0.3","0.0.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-32254.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H"}]}