aspnet-launchsettings-exposure: ASP.NET Launch Settings - Exposure

2026-01-24 aspnet launchsettings PoC Public

Description

Detected exposed launchSettings.json files in ASP.NET Core applications. This file contains environment variables and launch configurations that may leak sensitive information.

PoC

id: aspnet-launchsettings-exposure

info:
  name: ASP.NET Launch Settings - Exposure
  author: theamanrawat
  severity: medium
  description: |
    Detected exposed launchSettings.json files in ASP.NET Core applications. This file contains environment variables and launch configurations that may leak sensitive information.
  reference:
    - https://learn.microsoft.com/en-us/aspnet/core/fundamentals/environments
  tags: aspnet,config,exposure,json,dotnet,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/Properties/launchSettings.json"
      - "{{BaseURL}}/launchSettings.json"

    stop-at-first-match: true
    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "profiles"
          - "iisSettings"
          - "commandName"
          - "launchBrowser"
        condition: and

      - type: word
        part: header
        words:
          - "application/json"

      - type: status
        status:
          - 200
# digest: 4b0a00483046022100effc25ec1f404c91a3d90a64208c7e57dc0e75383cbb79795bcfb50678fb997a022100b5d3d9cedf7eaada7cbb553b06f74dc26e5e5a109702d32a2db062418688bec4:922c64590222798bb761d5b6d8e72950

# Visit https://trap.biu.life/ to view exploit trends for this vulnerability.

References

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