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GO-2026-4522 Cilium may not enforce host firewall policies when Native Routing, WireGuard and Node Encryption are enabled in github.com/cilium/cilium

🗓️ 23 Feb 2026 18:23:12Reported by GoogleType 
osv
 osv🔗 osv.dev👁 3 Views

GO-2026-4522: Cilium may not enforce host firewall policies with Native Routing, WireGuard, and Node Encryption.

Related
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-26963
19 Feb 202623:38
–attackerkb
CNNVD		Cilium 安全漏洞
20 Feb 202600:00
–cnnvd
CVE		CVE-2026-26963
19 Feb 202623:38
–cve
Cvelist		CVE-2026-26963 Cilium may not enforce host firewall policies when Native Routing, WireGuard and Node Encryption are enabled
19 Feb 202623:38
–cvelist
Github Security Blog		Cilium may not enforce host firewall policies when Native Routing, WireGuard and Node Encryption are enabled
19 Feb 202619:39
–github
NVD		CVE-2026-26963
20 Feb 202600:16
–nvd
OSV		BIT-CILIUM-2026-26963 Cilium may not enforce host firewall policies when Native Routing, WireGuard and Node Encryption are enabled
21 Feb 202608:36
–osv
OSV		BIT-CILIUM-OPERATOR-2026-26963 Cilium may not enforce host firewall policies when Native Routing, WireGuard and Node Encryption are enabled
21 Feb 202608:36
–osv
OSV		BIT-HUBBLE-RELAY-2026-26963 Cilium may not enforce host firewall policies when Native Routing, WireGuard and Node Encryption are enabled
21 Feb 202608:40
–osv
OSV		CVE-2026-26963 Cilium may not enforce host firewall policies when Native Routing, WireGuard and Node Encryption are enabled
19 Feb 202623:38
–osv
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23 Feb 2026 19:40Current
5.3Medium risk
Vulners AI Score5.3
CVSS 3.15.4 - 6.1
EPSS0.00006
SSVC
ciliumhost firewallnative routingwireguardnode encryptionpolicy enforcement
3