CVE-2026-41520

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.17.15, 1.18.9, and 1.19.3, the output of cilium-bugtool can contain sensitive data when the tool is run against Cilium deployments with WireGuard encryption enabled. This issue has been patched in versions 1.17.15, 1.18.9, and 1.19.3.

• CWE-200
• CWE-312
• CWE-312

• https://github.com/cilium/cilium/releases/tag/v1.17.15Product, Release Notes
• https://github.com/cilium/cilium/releases/tag/v1.18.9Product, Release Notes
• https://github.com/cilium/cilium/releases/tag/v1.19.3Product, Release Notes
• https://github.com/cilium/cilium/security/advisories/GHSA-gj49-89wh-h4gjMitigation, Vendor Advisory

Published

May 8, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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