{"id":"CVE-2026-41520","aliases":["BIT-cilium-2026-41520","BIT-cilium-operator-2026-41520","BIT-hubble-relay-2026-41520","GHSA-gj49-89wh-h4gj","GO-2026-5400"],"url":"https://o3.security/vulnerability/CVE-2026-41520","summary":"Cillium exposes sensitive information included in the cilium-bugtool debug archive","details":"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.","published":"2026-05-08T22:01:08.394Z","modified":"2026-08-12T03:51:35.921237236Z","cvss":{"score":7.9,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N"},"epss":{"score":0.00077,"percentile":0.00121,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/cilium/cilium","fixedVersion":"1.17.15"},{"ecosystem":"Go","name":"github.com/cilium/cilium","fixedVersion":"1.18.9"},{"ecosystem":"Go","name":"github.com/cilium/cilium","fixedVersion":"1.19.3"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/cilium/cilium/releases/tag/v1.17.15"},{"type":"WEB","url":"https://github.com/cilium/cilium/releases/tag/v1.18.9"},{"type":"WEB","url":"https://github.com/cilium/cilium/releases/tag/v1.19.3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41520.json"},{"type":"ADVISORY","url":"https://github.com/cilium/cilium/security/advisories/GHSA-gj49-89wh-h4gj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41520"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:35.921237236Z"}}