GHSA-hxv8-4j4r-cqgv · 深刻度： medium · エコシステム： go — Cilium L7 proxy may bypass Kubernetes NetworkPolicy for same-node traffic
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.17.14, 1.18.8, and 1.19.2, Ingress Network Policies are not enforced for traffic from pods to L7 Services (Envoy, GAMMA) with a local backend on the same node, when Per-Endpoint Routing is enabled and BPF Host Routing is disabled. Per-Endpoint Routing is disabled by default, but is automatically enabled in deployments using cloud IPAM, including Cilium ENI on EKS (`eni.enabled`), AlibabaCloud ENI (`alibabacloud.enabled`), Azure IPAM (`azure.enabled`, but not AKS BYOCNI), and some GKE deployments (`gke.enabled`; managed offerings such as GKE Dataplane V2 may use different defaults). It is typically not enabled in tunneled deployments, and chaining deployments are not affected. In practice, Amazon EKS with Cilium ENI mode is likely the most common affected environment. Versions 1.17.14, 1.18.8, and 1.19.2 contain a patch. There is currently no officially verified or comprehensive workaround for this issue. The only option would be to disable per-endpoint routes, but this will likely cause disruptions to ongoing connections, and potential conflicts if running in cloud providers.
総合評価: CVE-2026-33726 は低リスク（27.2/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.24%、15 パーセンタイル） 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.01% | 0.24% | +0.24% |
| 2 | 2026-03-27 | — | 0.01% | — |
EPSS の全履歴 （全 2 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 5.4 | 3.1 | MEDIUM |
|
2.3 | 2.7 | [email protected] |
| 4.3 | 3.1 | MEDIUM |
|
2.8 | 1.4 | [email protected] |
GHSA-hxv8-4j4r-cqgv · 深刻度： medium · エコシステム： go — Cilium L7 proxy may bypass Kubernetes NetworkPolicy for same-node traffic
| URL | タグ |
|---|---|
| https://docs.cilium.io/en/stable/network/concepts/routing/#routing | Technical Description |
| https://docs.cilium.io/en/stable/network/kubernetes/policy/#network-policy | Technical Description |
| https://docs.cilium.io/en/stable/network/servicemesh/l7-traffic-management | Technical Description |
| https://docs.cilium.io/en/stable/operations/performance/tuning/#ebpf-host-routing | Technical Description |
| https://github.com/cilium/cilium/pull/44693 | Issue Tracking Patch |
| https://github.com/cilium/cilium/security/advisories/GHSA-hxv8-4j4r-cqgv | Patch Vendor Advisory |