CVE-2026-41520

Cillium exposes sensitive information included in the cilium-bugtool debug archive

State: Published
Severity: 7.9 High
Published: May 8, 2026
Updated: May 13, 2026
Reserved: Apr 20, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.9 High	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N	GitHub_M

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-312 Cleartext Storage of Sensitive Information

Affected Products

Product	Versions
ciliumcilium	< 1.17.15Affected >= 1.18.0, < 1.18.9Affected >= 1.19.0, < 1.19.3Affected

References

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