CVE-2025-30162
LOW3.2EPSS 0.01%East-west traffic not subject to egress policy enforcement for requests via Gateway API load balancers
Description
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.
Affected packages (5)
- Bitnami/cilium>= 1.15.0, < 1.17.2
- Bitnami/cilium-operator>= 1.15.0, < 1.17.2
- Bitnami/hubble-relay>= 1.15.0, < 1.17.2
- Go/github.com/cilium/cilium>= 1.16.0, < 1.16.8
- Go/github.com/cilium/cilium>= 1.15.0, < 1.15.15, >= 1.16.0, < 1.16.8, >= 1.17.0, < 1.17.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | LOW3.2 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N |