{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.17.15"
              },
              {
                "introduced": "1.18.0"
              },
              {
                "fixed": "1.18.9"
              },
              {
                "introduced": "1.19.0"
              },
              {
                "fixed": "1.19.3"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4206eaa53006115b8a52cbab6394c78f06ebcf6a"
            },
            {
              "introduced": "274205f001bb24b89d19f0fe7c3fb3aca20030c2"
            },
            {
              "fixed": "c4898256570989a353f65304446e02da9aaa812f"
            },
            {
              "introduced": "7c6667e1e707d7f39a4af3409c2a9ebea2917d32"
            },
            {
              "fixed": "f5eb641b18502ebeca412b40c1bec7ff3d8bf9eb"
            }
          ],
          "repo": "https://github.com/cilium/cilium",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-gj49-89wh-h4gj"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-200",
      "CWE-312"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41520.json"
  },
  "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.",
  "id": "CVE-2026-41520",
  "modified": "2026-07-08T05:37:13.152777491Z",
  "published": "2026-05-08T22:01:08.394Z",
  "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"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Cillium exposes sensitive information included in the cilium-bugtool debug archive"
}