Vulnerability · Published Mar 24, 2025 · Assigned by GitHub_M

CVE-2025-30163Node based network policies may incorrectly allow workload traffic

Low 3.4

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 11% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.4Low

Exploit odds (30 days)0.2%top 88.8% 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. 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/cilium/cilium	1.16.8	GHSA-c6pf-2v8j-96mc
Go	github.com/cilium/cilium	1.17.2	GHSA-c6pf-2v8j-96mc
Go	github.com/cilium/cilium	1.16.8, 1.17.2	GO-2025-3561

Affected products (as reported)

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

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

References

https://github.com/cilium/cilium/security/advisories/GHSA-c6pf-2v8j-96mc x_refsource_CONFIRM
https://github.com/cilium/cilium/pull/36657 x_refsource_MISC
https://docs.cilium.io/en/stable/security/policy/language/#node-based x_refsource_MISC