CVE-2025-30163
Node based network policies may incorrectly allow workload traffic
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.
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Node based network policies may incorrectly allow workload traffic
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.
- Record
CVE-2025-30163- CVSS 3.1
- 3.4 Low
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
EUVDEUVD-2025-8006
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.
- Record
EUVD-2025-8006- CVSS 3.1
- 3.4 Low
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-c6pf-2v8j-96mc
Cilium node based network policies may incorrectly allow workload traffic
Impact
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.
Patches
This issue was fixed by https://github.com/cilium/cilium/pull/36657.
This issue affects:
- 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 v1.16.8
- Cilium v1.17.2
Workarounds
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.
Acknowledgements
The Cilium community has worked together with members of Isovalent to prepare these mitigations. Special thanks to @oblazek for reporting and fixing this issue.
For more information
If you think you have found a vulnerability affecting Cilium, we strongly encourage you to report it to our security mailing list at [email protected]. This is a private mailing list for the Cilium security team, and your report will be treated as top priority. Please also address any comments or questions on this advisory to the same mailing list.
- Record
GHSA-c6pf-2v8j-96mc- CVSS 3.1
- 3.4 Low
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2025-30163- CVSS 3.1
- 3.4 Low
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N - CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
OSV
Node based network policies may incorrectly allow workload traffic
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.
- Record
CVE-2025-30163- CVSS 3.1
- 3.4 Low
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
OSVGHSA-c6pf-2v8j-96mc
Cilium node based network policies may incorrectly allow workload traffic
Impact
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.
Patches
This issue was fixed by https://github.com/cilium/cilium/pull/36657.
This issue affects:
- 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 v1.16.8
- Cilium v1.17.2
Workarounds
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.
Acknowledgements
The Cilium community has worked together with members of Isovalent to prepare these mitigations. Special thanks to @oblazek for reporting and fixing this issue.
For more information
If you think you have found a vulnerability affecting Cilium, we strongly encourage you to report it to our security mailing list at [email protected]. This is a private mailing list for the Cilium security team, and your report will be treated as top priority. Please also address any comments or questions on this advisory to the same mailing list.
- Record
GHSA-c6pf-2v8j-96mc- CVSS 3.1
- 3.4 Low
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
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OSVBIT-cilium-2025-30163 No score
Node based network policies may incorrectly allow workload traffic
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.
- Record
BIT-cilium-2025-30163- Updated
- 2026-11-02
OSVBIT-cilium-operator-2025-30163 No score
Node based network policies may incorrectly allow workload traffic
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.
- Record
BIT-cilium-operator-2025-30163- Updated
- 2026-11-02
OSVBIT-hubble-relay-2025-30163 No score
Node based network policies may incorrectly allow workload traffic
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.
- Record
BIT-hubble-relay-2025-30163- Updated
- 2026-11-02
OSVGO-2025-3561 No score
Cilium node based network policies may incorrectly allow workload traffic in github.com/cilium/cilium
Cilium node based network policies may incorrectly allow workload traffic in github.com/cilium/cilium
- Record
GO-2025-3561- Updated
- 2026-11-02
OSVopenSUSE-SU-2025:14937-1 No score
govulncheck-vulndb-0.0.20250327T184518-1.1 on GA media
These are all security issues fixed in the govulncheck-vulndb-0.0.20250327T184518-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2025:14937-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/cilium/ciliumGo |
1.16.0 up to 1.16.8 | 1.16.8 |
github.com/cilium/ciliumGo |
1.17.0 up to 1.17.2 | 1.17.2 |
ciliumBitnami |
1.16.0 up to 1.17.2 | 1.17.2 |
cilium-operatorBitnami |
1.16.0 up to 1.17.2 | 1.17.2 |
hubble-relayBitnami |
1.16.0 up to 1.17.2 | 1.17.2 |
github.com/cilium/ciliumGo |
1.16.0 up to 1.16.8, 1.17.0 up to 1.17.2 | 1.16.81.17.2 |
govulncheck-vulndbopenSUSE:Tumbleweed From an advisory covering 30 CVEs |
before 0.0.20250327T184518-1.1 | 0.0.20250327T184518-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-30163 is a low vulnerability (CVSS 3.4) in Cilium, published March 24, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 11th percentile. Fixed in github.com/cilium/cilium 1.16.8.
References
github.com/cilium/cilium/security/advisories/GHSA-c6pf-2v8j-96mc
docs.cilium.io/en/stable/security/policy/language
nvd.nist.gov/vuln/detail/CVE-2025-30163
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lists.opensuse.org/archives/list/[email protected]/thread/NEVFAGUWHTVZSJTUAIU6C4S26DP2KIGB
suse.com/security/cve/CVE-2024-25132