Why SOAP web services need security scanning

SOAP still powers mission-critical applications

‍Despite the rise of REST, gRPC, and GraphQL, SOAP remains deeply embedded in financial services, healthcare, government, and other highly regulated industries. From legacy systems to modern integrations, SOAP APIs continue to transmit sensitive data, and they must be protected.

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Common security risks in SOAP APIs
SOAP services are especially vulnerable to:

  • XML and SQL injection
  • Broken authentication or session management
  • Information exposure via WSDL files
  • Unencrypted message transmission
  • Improper access controls

These vulnerabilities can lead to data breaches, service disruption, or compliance violations if not addressed proactively.

Use cases: Who needs a SOAP scanner?

  • Enterprises with legacy SOAP infrastructures: Invicti makes it easy to secure long-running applications without retrofitting them for REST-based tooling.
  • Compliance-conscious organizations: Meet the demands of PCI DSS, HIPAA, SOX, and other frameworks by regularly testing SOAP APIs for vulnerabilities.
  • Security and DevOps teams with mixed APIs: Use a single solution to test SOAP, REST, GraphQL, and more—reducing tool sprawl and ensuring full API coverage.

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How Invicti stands out for SOAP vulnerability scanning

Unlike more basic vulnerability scanners, Invicti performs SOAP scanning using its proven DAST engine—and unlike point solutions for API security, it also scans your entire application, not just its SOAP APIs. Whether your web services are hosted publicly or behind auth, Invicti brings:

  • Robust WSDL interpretation
  • Real-time attack simulation
  • Customizable testing logic
  • Automated coverage, no scripting required

Lo que dicen nuestros clientes

"Para más sitios web, ya no necesitamos recurrir a servicios externos para las pruebas de seguridad. Podemos iniciar Invicti, ejecutar las pruebas tantas veces como queramos, ver los resultados del escaneo y aplicar las correcciones que necesitemos. Como resultado, el presupuesto que gastábamos cada año en test de penetración disminuyó aproximadamente un 60% casi de inmediato y se redujo aún más al año siguiente, hasta cerca del 20% de nuestro gasto inicial".

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—Brian Brackenborough | CISO, Channel 4

"Invicti detectó vulnerabilidades web que otras soluciones no encontraron. Es fácil de usar y configurar..."

—Henk-Jan Angerman | Founder, SECWATCH

"Tuve la oportunidad de comparar informes de expertos con los de Invicti. Invicti fue mejor, encontrando más brechas".

—Andy Gambles | Senior Analyst, OECD

"Invicti es el mejor escáner de seguridad de aplicaciones web en términos de relación coste-beneficio. Es un software muy estable, más rápido que la herramienta que utilizábamos anteriormente y está relativamente libre de falso positivo, que es exactamente lo que buscábamos".

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—Harald Nandke | Principal Consultant, Unify (now Mitel)

Invicti’s SOAP scanner: DAST for APIs and web services

WSDL import from URL or file

‍Reads your known schemas wherever they live.

WSDL schema detection during crawling Automatically imports WSDL files found in your app.

Input validation testing

Uncovers injection, encoding, and logic flaws.

Authenticated scanning

Tests protected endpoints and complex flows. Scans triggered by commits, builds, or deployments.

Detailed reporting

Provides actionable findings with remediation guidance.

G2 Awarded

Best Estimated Return on Investment
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Users love us
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Momentum Leader
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Invicti’s SOAP scanner: DAST for APIs and web services

WSDL-aware scanning

Invicti intelligently parses WSDL (Web Services Description Language) files to fully understand your SOAP API’s operations, parameters, and message structures with a minimum of manual configuration.

Automatic Authentication Support

Secure even your protected endpoints. Invicti supports Basic, NTLM, Digest, Bearer Token, and custom authentication mechanisms, preserving session state to test all operations thoroughly.

Active DAST for real-world risk detection

Our dynamic scanner simulates actual attack scenarios by sending crafted SOAP requests to your endpoints. This allows Invicti to identify vulnerabilities that static analysis tools or basic scanners can’t detect.

CI/CD Integration for Continuous Coverage

Embed SOAP scanning into your development and deployment workflows. Invicti integrates with Jenkins, GitHub Actions, Azure DevOps, and other pipeline tools to ensure every release is secure.

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FAQ: SOAP scanner

Can Invicti scan WSDL files directly?

Yes. Simply provide a WSDL schema file or URL, and Invicti will parse the structure, enabling automated and targeted scanning. Invicti can also automatically add any WSDL schemas it finds while crawling your application.

Is authentication supported for protected SOAP services?

Absolutely. Invicti supports Basic Auth, NTLM, tokens, and custom header-based authentication.

Can SOAP scanning be integrated into CI/CD?

Yes, SOAP scanning on the Invicti platform supports full DevSecOps integration with popular CI tools and automation pipelines.

What vulnerabilities can Invicti detect in SOAP APIs?

Most typical application vulnerabilities can also be detected via SOAP APIs, including injection flaws, authentication issues, insecure communications, access control failures, and more.

How does SOAP scanning differ from REST scanning?

SOAP is a standardized protocol that uses structured XML and WSDL contracts, which requires advanced parsing and protocol handling. REST is a looser API architectural style that uses HTTP methods as operations and (usually) JSON as its data format. Invicti provides native parsing and scanning both for strictly defined SOAP schemas and for application-dependent REST specifications.