Hudson Enterprises · ReDoScan

ReDoS Vulnerability Checker

Paste a regular expression. Find out if it is vulnerable to ReDoS — regex denial-of-service via catastrophic backtracking (CWE-1333).

Include dynamic timing analysis (adds ~1–2s; feeds adversarial inputs to confirm)

Scanning in CI/CD or checking a whole codebase? ReDoScan API — 1,500 free scans/month →

Batch up to 200 patterns per request via /scan-batch. Any language over HTTP. This checker is a free convenience tool; results are informational. One domain: hudsonenterprisesllc.com.