cve.bz

CVE-2026-26963

5.4 mediumEPSS 0.1%

Medium (5.4) in cilium cilium. EPSS 0.1% chance of exploitation in the next 30 days. Fixed in github.com/cilium/cilium 1.18.6.

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.

Severity

CVSS 3.1

5.4 medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS
0.1% chance of exploitation in the next 30 days; higher than 3% of CVEs (scores of 2026-10-31)
CWE
CWE-863
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-5r23-prx4-mqg3Gogithub.com/cilium/cilium>=1.18.0 <1.18.61.18.6
GO-2026-4522Gogithub.com/cilium/cilium>=1.18.0 <1.18.61.18.6

References

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