Source: Help Net Security
Author: Help Net Security
URL: https://www.helpnetsecurity.com/2025/07/24/autoswagger-open-source-tool-expose-hidden-api-authorization-flaws/
Autoswagger: Open-source tool to expose hidden API authorization flaws
ONE SENTENCE SUMMARY:
Autoswagger is a free tool that scans APIs for broken authorization vulnerabilities by analyzing OpenAPI documentation and endpoint responses.
MAIN POINTS:
- Autoswagger scans APIs for broken authorization vulnerabilities.
- It detects API schemas in various formats across organization domains.
- Scans for OpenAPI and Swagger documentation pages to find valid schemas.
- Automatically generates endpoints list for testing based on API specifications.
- Tests endpoints for authorization flaws by sending valid requests.
- Flags endpoints with unexpected valid responses instead of HTTP errors.
- Highlights endpoints with missing or ineffective authentication.
- Can simulate bypassing validation checks with a –brute flag.
- Analyzes responses for exposed sensitive data like PII or credentials.
- Available for free on GitHub to enhance API security practices.
TAKEAWAYS:
- Autoswagger helps identify broken authorization in API endpoints effortlessly.
- Publicly exposing API documentation increases risk; avoid unless necessary.
- Regular API scanning is critical after each development iteration.
- Simulating bypass checks can uncover deeper security flaws.
- Tool emphasizes importance of not exposing APIs unnecessarily.