CVE-2026-41520

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

Published May 8, 2026 CVSS 3.1 · 7.9 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Github GHSA Github GHSA GHSA-gj49-89wh-h4gj Cillium exposes sensitive information included in the cilium-bugtool debug archive
History
Type Values Removed Values Added
CPEs cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Cilium
Cilium cilium
Vendors & Products Cilium
Cilium cilium
Type Values Removed Values Added
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.
Title Cillium exposes sensitive information included in the cilium-bugtool debug archive
Weaknesses CWE-200
CWE-312
References
Metrics cvssV3_1

{'score': 7.9, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
May 13, 2026, 7:33 PM
Reserved
Apr 20, 2026, 6:18 PM
Status
Analyzed
Published
May 8, 2026, 11:16 PM
Modified
Nov 11, 2026, 8:10 PM