Owasp Zap

Overview

Owasp Zap is a web application security tool that appears across web application security workflows in this knowledge base. It is referenced as part of higher-level security analysis, investigation, monitoring, or validation activity rather than as an end in itself.

What It Is

Owasp Zap is best understood as a web-application-security tool in this knowledge base. Its role is conceptual and system-facing rather than procedural: it gives analysts or defenders a structured way to examine evidence, model system behavior, or reason about security state.

How It Works

Owasp Zap works by turning technical inputs into more interpretable outputs at the system level. Across the source skills, it appears as part of larger analysis, investigation, monitoring, or validation loops rather than as a standalone end state.

Core Concepts

• api security
• owasp
• authorization
• bfla
• privilege escalation
• access control
• data exposure
• rest security
• pii leakage
• penetration testing
• idor
• burpsuite

Typical Workflow

• BASE_URL = "https://target-api.example.com"
• ADMIN_PATH_PATTERNS = [
• BASE_URL = "https://target-api.example.com/api/v1"
• endpoints_to_test = [
• ("GET", "/users/me", None),
• ("GET", "/users/me/orders", None),
• ("GET", "/products", None),
• ("GET", "/users/me/settings", None),
• Identify every endpoint that references objects by ID across the application.
• arjun -u http://target.com/api/users/me -m JSON -H "Authorization: Bearer USER_TOKEN"

Use Cases

• Testing whether regular users can access administrative API endpoints by direct URL access
• Assessing APIs for vertical privilege escalation where users can invoke functions above their role
• Evaluating if API gateways and middleware consistently enforce function-level access controls
• Testing role-based access control (RBAC) implementation across all API endpoints and HTTP methods
• Validating that API documentation does not expose admin endpoint paths that lack authorization
• GET /api/v1/admin/users returns 200 with all user data (BFLA - read)
• PUT /api/v1/admin/users/1002/role accepts role change (BFLA - write)
• DELETE /api/v1/audit/logs returns 200 (BFLA - destructive)
• Testing APIs where the frontend displays a subset of data but the API response includes additional fields
• Assessing mobile application APIs where responses are designed for multiple client types and may contain excess data

Limitations

• Output still depends on context, data quality, and surrounding analysis.
• The tool should be interpreted as part of a broader workflow, not as a complete answer by itself.
• Capabilities and visibility vary depending on environment, integrations, and available inputs.

Related Tools

• Burp Suite Professional, Postman, Ffuf, Burp Suite, Browser DevTools, Nuclei, Arjun, Param Miner

Sources

• exploiting-broken-function-level-authorization
• exploiting-excessive-data-exposure-in-api
• exploiting-idor-vulnerabilities
• exploiting-mass-assignment-in-rest-apis
• exploiting-oauth-misconfiguration
• exploiting-sql-injection-with-sqlmap
• exploiting-template-injection-vulnerabilities
• integrating-dast-with-owasp-zap-in-pipeline
• performing-api-security-testing-with-postman
• performing-clickjacking-attack-test
• performing-csrf-attack-simulation
• performing-http-parameter-pollution-attack
• performing-second-order-sql-injection
• testing-api-for-broken-object-level-authorization
• testing-api-for-mass-assignment-vulnerability
• testing-cors-misconfiguration
• testing-for-broken-access-control
• testing-for-business-logic-vulnerabilities
• testing-for-email-header-injection
• testing-for-open-redirect-vulnerabilities
• testing-for-xxe-injection-vulnerabilities
• testing-oauth2-implementation-flaws
• testing-websocket-api-security