WSSAT is an open source web service security scanning tool which provides a dynamic environment to add, update or delete vulnerabilities by just editing its configuration files. This tool accepts WSDL address list as input file and for each service, it performs both static and dynamic tests against the security vulnerabilities. It also makes information disclosure controls. With this tool, all web services could be analyzed at once and the overall security assessment could be seen by the organization.

Objectives of WSSAT are to allow organizations:

  • Perform their web services security analysis at once
  • See overall security assessment with reports
  • Harden their web services

WSSAT’s main capabilities include:

Dynamic Testing:

  • Insecure Communication – SSL Not Used
  • Unauthenticated Service Method
  • Error Based SQL Injection
  • Cross Site Scripting
  • XML Bomb
  • External Entity Attack – XXE
  • XPATH Injection
  • Verbose SOAP Fault Message

Static Analysis:

  • Weak XML Schema: Unbounded Occurrences
  • Weak XML Schema: Undefined Namespace
  • Weak WS-SecurityPolicy: Insecure Transport
  • Weak WS-SecurityPolicy: Insufficient Supporting Token Protection
  • Weak WS-SecurityPolicy: Tokens Not Protected

Information Leakage:

  • Server or technology information disclosure

WSSAT’s main modules are:

  • Parser
  • Vulnerabilities Loader
  • Analyzer/Attacker
  • Logger
  • Report Generator

The main difference of WSSAT is to create a dynamic vulnerability management environment instead of embedding the vulnerabilities into the code.

This project has been developed as Term Project at Middle East Technical University (METU), Software Management master program.

Changelog v2.0


  • REST API scanning support.
  • Sample REST API project (WSAPI2Test).
  • X-XSS-Protection header check.
  • HTTP OPTIONS method check.
  • Cross Site Tracing (XST) check.
  • XML Report support.
  • MenuStrip to the main form.
  • About form.
  • Custom SOAP header & body tag entry form.
  • Custom HTTP header & UserAgent entry form (especially to add custom cookie such as “Cookie: JSESSIONID=…..”).


  • Visual Improvement.
  • Tested with “Damn Vulnerable Web Services” and some bugs are fixed.
  • Tested with “OWASP WebGoat web services” and some bugs are fixed.
  • Exception and Scan log files are separated.
  • Project Wiki
  • Project Homepage
  • Project v2.0 release published.
  • .Net Framework Upgrade (4.5 to 4.7).
  • Visual Studio Upgrade (Community Edition 2015 to 2017).