CVE-2025-30163 Node based network policies may incorrectly allow workload traffic
Cilium node-based network policies may incorrectly allow traffic from non-node endpoints, bypassing security controls when enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-30163?
CVE-2025-30163 is a low-severity missing authorization vulnerability in cilium, published on 24 Mar 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Node based network policies (`fromNodes` and `toNodes`) will incorrectly permit traffic to/from non-node endpoints that share the labels specified in `fromNodes` and `toNodes` sections of network policies. Node based network policy is disabled by default in Cilium. This issue affects: Cilium 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 v1.16.8 and v1.17.2. Users can work around this issue by ensuring that the labels used in `fromNodes` and `toNodes` fields are used exclusively by nodes and not by other endpoints.
Weakness: CWE-863
Which versions are affected by CVE-2025-30163?
8 open source packages ship an affected version, including github.com/cilium/cilium, cilium and cilium-operator. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/cilium/cilium Go | From 1.16.0 | 1.16.8, 1.17.2 |
github.com/cilium/cilium Go | From 1.16.0 | 1.16.8 |
github.com/cilium/cilium Go | From 1.16.0 | 1.16.8 |
github.com/cilium/cilium Go | From 1.17.0 | 1.17.2 |
github.com/cilium/cilium Go | From 1.17.0 | 1.17.2 |
cilium Bitnami | From 1.16.0 | 1.17.2 |
2 more packages
cilium-operator Bitnami | From 1.16.0 | 1.17.2 |
hubble-relay Bitnami | From 1.16.0 | 1.17.2 |
Products include Cilium Cilium.
How do I fix CVE-2025-30163?
Upgrade github.com/cilium/cilium to a fixed version for your release line: 1.16.8 or 1.17.2.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-30163 being exploited?
There is no known exploitation of CVE-2025-30163 in the wild and no public exploit code.
Other vulnerabilities in cilium
- CVE-2026-49445 Cilium: Sensitive information disclosure and cluster disruption via local Envoy admin socket access
- CVE-2022-29178 Incorrect Default Permissions in Cilium
- CVE-2024-28860 Insecure IPsec transport encryption in Cilium
- CVE-2026-41520 Cillium exposes sensitive information included in the cilium-bugtool debug archive
- CVE-2024-37307 Cilium leaks sensitive information in cilium-bugtool
Sources
Also known as BIT-cilium-2025-30163, BIT-cilium-operator-2025-30163, BIT-hubble-relay-2025-30163, GHSA-c6pf-2v8j-96mc, GO-2025-3561, MINI-f76f-pj95-896f and 3 more.