CVE-2026-26963mediumCWE-863

CVE-2026-26963: medium-severity vulnerability in cilium

Cilium may not enforce host firewall policies when Native Routing, WireGuard and Node Encryption are enabled

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.1epss 0.1%
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Versions 1.18.0 through 1.18.5 will incorrectly permit traffic from Pods on other nodes when Native Routing, WireGuard and Node Encryption are enabled. This issue has been fixed in version 1.18.6.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Affected products
cilium · cilium
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