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Vulnerability Details CVE-2026-26963

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 0.5%
CVSS Severity
CVSS v3 Score 6.1
Products affected by CVE-2026-26963
  • Cilium » Cilium » Version: 1.18.0
    cpe:2.3:a:cilium:cilium:1.18.0
  • Cilium » Cilium » Version: 1.18.1
    cpe:2.3:a:cilium:cilium:1.18.1
  • Cilium » Cilium » Version: 1.18.2
    cpe:2.3:a:cilium:cilium:1.18.2
  • Cilium » Cilium » Version: 1.18.3
    cpe:2.3:a:cilium:cilium:1.18.3
  • Cilium » Cilium » Version: 1.18.4
    cpe:2.3:a:cilium:cilium:1.18.4


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