CVE-2026-41520— Cillium exposes sensitive information included in the cilium-bugtool debug archive
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I. Basic Information for CVE-2026-41520
Vulnerability Information
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Vulnerability Title
Cillium exposes sensitive information included in the cilium-bugtool debug archive
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
信息暴露
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cilium 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cilium是Cilium开源的一个开源软件。用于提供和透明地保护应用程序工作负载（如应用程序容器或进程）之间的网络连接和负载平衡。 Cilium 1.17.15之前版本、1.18.9之前版本和1.19.3之前版本存在信息泄露漏洞，该漏洞源于启用WireGuard加密时，cilium-bugtool的输出可能包含敏感数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-41520
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- Release 1.18.9 · cilium/cilium · GitHubx_refsource_MISC
- Release 1.19.3 · cilium/cilium · GitHubx_refsource_MISC
- Release 1.17.15 · cilium/cilium · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-41520
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