Vulnerability · Published Mar 24, 2025 · Assigned by GitHub_M

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

Low 3.2

In plain English

A low-severity incorrect authorization in cilium from cilium. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.2Low

Exploit odds (30 days)0.2%top 86.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/cilium/cilium	1.16.8	GHSA-24qp-4xx8-3jvj
Go	github.com/cilium/cilium	1.17.2	GHSA-24qp-4xx8-3jvj
Go	github.com/cilium/cilium	1.15.15	GHSA-24qp-4xx8-3jvj
Go	github.com/cilium/cilium	1.15.15, 1.16.8, 1.17.2	GO-2025-3560

Affected products (as reported)

Vendor	Product	Versions
cilium	cilium	>= 1.16.0, < 1.16.8>= 1.17.0, < 1.17.2>= 1.15.0, < 1.15.15

Weakness: CWE-863 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N

References

https://github.com/cilium/cilium/security/advisories/GHSA-24qp-4xx8-3jvj x_refsource_CONFIRM
https://github.com/cilium/proxy/pull/1172 x_refsource_MISC
https://docs.cilium.io/en/stable/network/lb-ipam x_refsource_MISC