CVE-2026-41520

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

CVSS 7.9 HIGHEPSS 0.1%CWE-200 CWE-312

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.9EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

08 May 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

Affected products

cilium · cilium

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References

https://github.com/cilium/cilium/releases/tag/v1.17.15 https://github.com/cilium/cilium/releases/tag/v1.18.9 https://github.com/cilium/cilium/releases/tag/v1.19.3 https://github.com/cilium/cilium/security/advisories/GHSA-gj49-89wh-h4gj