Individual skill
testing-oauth2-implementation-flaws
Tests OAuth 2.0 and OpenID Connect implementations for authorization code interception, redirect URI manipulation, CSRF in OAuth flows, token leakage, scope escalation, and PKCE bypass, using Burp Suite Professional and the EsPReSSO extension to probe the authorization server, client, and token handling. Use when assessing OAuth2/OIDC flows or SSO systems for misconfigurations enabling account takeover.
skills/testing-oauth2-implementation-flaws/SKILL.md
Source commit 54a798831d2266a3ca61ce68a7acb80b81160d57
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- Last checked
- Nov 9, 2026
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- 35,862
- Repository last updated
- Aug 31, 2026
- License
- Apache-2.0
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- ai-agents Repository topic
- claude-code Repository topic
- cybersecurity Repository topic
- incident-response Repository topic
- mitre-attack Repository topic
- penetration-testing Repository topic
- red-team Repository topic
- security Repository topic
- cloud-security Repository topic
- malware-analysis Repository topic
- api-security Declared skill tag
- oauth2 Declared skill tag
- oidc Declared skill tag
- authentication Declared skill tag
- redirect-uri Declared skill tag
- token-security Declared skill tag
- security Derived category
- testing Derived category
- security-application Derived category
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LICENSEasset · 11,255 bytesSKILL.mdcore · 17,351 bytesSKILL.mdcore · 17,351 bytesSKILL.mdcore · 17,351 bytesSKILL.mdcore · 17,351 bytesSKILL.mdcore · 17,351 bytesSKILL.mdcore · 17,351 bytesSKILL.mdcore · 17,351 bytesreferences/api-reference.mddoc · 1,903 bytesscripts/agent.pyruns · 8,172 bytes
Read excerpt
# Testing OAuth2 Implementation Flaws
## When to Use
- Assessing OAuth 2.0 authorization code flow for redirect URI validation weaknesses
- Testing OAuth client applications for CSRF protection (state parameter usage) and PKCE enforcement
- Evaluating token storage, transmission, and lifecycle management in OAuth implementations
- Testing scope escalation where clients request more permissions than authorized
- Assessing OpenID Connect implementations for ID token validation and nonce usage
**Do not use** without written authorization. OAuth testing may result in token theft or unauthorized access.
## Prerequisites
- Written authorization specifying the OAuth provider and client applications in scope