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BIT-cilium-2025-30162 — East-west traffic not subject to egress policy enforcement for requests via Gateway API load balancers

2026-10-03T19:57:53.931310+00:00

Affected: Bitnami: cilium

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. For Cilium users who use Gateway API for Ingress for some services and use LB-IPAM or BGP for LB Service implementation and use network policies to block egress traffic from workloads in a namespace to workloads in other namespaces, egress traffic from workloads covered by such network policies to LoadBalancers configured by `Gateway` resources will incorrectly be allowed. LoadBalancer resources not deployed via a Gateway API configuration are not affected by this issue. This issue affects: Cilium v1.15 between v1.15.0 and v1.15.14 inclusive, v1.16 between v1.16.0 and v1.16.7 inclusive, and v1.17 between v1.17.0 and v1.17.1 inclusive. This issue is fixed in Cilium v1.15.15, v1.16.8, and v1.17.2. A Clusterwide Cilium Network Policy can be used to work around this issue for users who are unable to upgrade.

EUVD-2026-224689

2026-10-03T19:57:53.931365+00:00

EUVD-2026-224689

fkie_cve-2025-30162

2026-10-03T19:57:53.931390+00:00

GHSA-24qp-4xx8-3jvj — Cilium East-west traffic not subject to egress policy enforcement for requests via Gateway API load balancers

2026-10-03T19:57:53.931417+00:00

Affected: Go: github.com/cilium/cilium

### Impact

For Cilium users who: - Use Gateway API for Ingress for some services **AND** - Use [LB-IPAM](https://docs.cilium.io/en/stable/network/lb-ipam/) or BGP for LB Service implementation **AND** - Use network policies to block egress traffic from workloads in a namespace to workloads in other namespaces

Egress traffic from workloads covered by such network policies to LoadBalancers configured by `Gateway` resources will incorrectly be allowed.

LoadBalancer resources not deployed via a Gateway API configuration are not affected by this issue.

### Patches

This issue was fixed by https://github.com/cilium/proxy/pull/1172.

This issue affects:

- Cilium v1.15 between v1.15.0 and v1.15.14 inclusive - Cilium v1.16 between v1.16.0 and v1.16.7 inclusive - Cilium v1.17 between v1.17.0 and v1.17.1 inclusive

This issue is fixed in:

- Cilium v1.15.15 - Cilium v1.16.8 - Cilium v1.17.2

### Workarounds

A Clusterwide Cilium Network Policy can be used to work around this issue for users who are unable to upgrade. An outline of such a policy is provided below:

``` apiVersion: "cilium.io/v2" kind: CiliumClusterwideNetworkPolicy metadata: name: "workaround" spec: endpointSelector: matchExpressions: - key: reserved:ingress operator: Exists ingress: - fromEntities: - world ```

- The policy opens up connectivity from all locations outside the cluster into the Cilium Ingress Gateway. - The policy establishes a default deny for all other traffic towards the…

openSUSE-SU-2025:14937-1 — govulncheck-vulndb-0.0.20250327T184518-1.1 on GA media

2026-10-03T19:57:53.931467+00:00

govulncheck-vulndb-0.0.20250327T184518-1.1 on GA media