CVE-2026-26963

medium Red Hat
CVSS v3 Base Score
6.1
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Published: February 19, 2026
Last Modified: February 19, 2026
Vendor: Red Hat

Description

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.

CWE

CWE-266

Affected Products

Confidential Compute AttestationMulticluster Global HubNetwork Observability OperatorOpenShift Developer Tools and ServicesOpenShift Service Mesh 2Red Hat Advanced Cluster Management for Kubernetes 2Red Hat Enterprise Linux 10Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9Red Hat OpenShift Container Platform 4

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 github.com 🔗 github.com