how to perform exhaustive subdomain security checks without manual digging

#api #webdev #devtools #opensource

the problem

tracking down subdomain vulnerabilities can be a slow and risky process. manually querying dns, analyzing certificates, and scanning for misconfigurations takes time and often misses hidden issues.

the solution

our subdomain-vulnerability-scanner api simplifies this by automating the entire process. it performs comprehensive subdomain enumeration by querying free dns, certificate transparency logs, and public dns APIs, then analyzes results for misconfigurations, exposed files, or outdated endpoints.

curl -X GET 'https://subdomain-vulnerability-scanner.apimesh.xyz/check?domain=example.com'

# sample output
{
  "subdomains": ["admin.example.com", "api.example.com"],
  "exposed_files": ["/.git/config"],
  "outdated_endpoints": ["https://api.example.com/v1/old-endpoint"]
}

how it works

it queries free dns records, certificate transparency logs, and public dns APIs to find as many subdomains as possible. then, it analyzes dns configurations, ssl certs, and endpoint responses to identify misconfigurations, exposed files, or outdated endpoints.