{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.4.3"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "b934467d26b91c96dc7c937b6a4e47d8d01484eb"
            }
          ],
          "repo": "https://github.com/lin-snow/ech0",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-4h9q-p5j4-xvvh"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-285"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/79xxx/CVE-2026-79667.json"
  },
  "details": "Ech0 version 4.3.4 and earlier fails to reliably enforce scoped access token (least-privilege) restrictions on several privileged admin routes. Multiple privileged endpoints (e.g., /api/inbox, /api/panel/comments, /api/backup/export) omit scope checks and authorize based only on the user's admin role, and the backup export handler discards token scope metadata entirely. An attacker holding a deliberately limited (low-scope) admin access token can reach broader privileged functionality than intended, including reading the inbox and exporting a full database backup ZIP archive. Fixed in 4.4.3.",
  "id": "CVE-2026-79667",
  "modified": "2026-08-27T11:31:05.223887121Z",
  "published": "2026-08-25T11:33:29.421Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/79xxx/CVE-2026-79667.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/lin-snow/Ech0/security/advisories/GHSA-4h9q-p5j4-xvvh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-79667"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/ech0-before-authentication-bypass-via-scope-enforcement"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Ech0 before 4.4.3 Authentication Bypass via Scope Enforcement"
}