Agent skill · security · yaklang
auth-sec
Entry P1 category router for authentication and authorization. Use when testing login flows, sessions, object authorization, JWT, OAuth, CORS, CSRF, and enterprise SSO weaknesses before any deeper auth topic skill.
Why this skill is useful
Provides specific domain knowledge for testing authentication and authorization vulnerabilities that the AI wouldn't reliably generate on its own.
What it needs
About 1k tokens when loaded. Last updated 2026-06-16. 1,563 stars on the source repository.
What this skill does
Authentication and Authorization Router This is the routing entry point for authentication, sessions, and authorization boundaries. Use it to decide whether the issue is mainly login mechanics, object-level authorization, browser trust boundaries, or identity protocols such as OAuth/JWT/SAML before going deeper. When to Use The target includes login, registration, password reset, 2FA, sessions, JWT, OAuth, or SSO You suspect object authorization flaws, cross-tenant access, cross-origin reads, CSRF, or protocol misconfiguration You need to decide whether to test authentication or authorization first Skill Map Authentication Bypass: login bypass, password reset, 2FA, enumeration, brute-force protections IDOR Broken Object Authorization: IDOR, BOLA, BFLA, missing object permissions JWT OAuth Token Attacks: algorithm confusion, key trust issues, claim abuse, token forgery OAuth OIDC Misconfiguration: redirect URI, state, nonce, PKCE, account binding CSRF Cross Site Request Forgery: CSRF tokens, SameSite, JSON CSRF, login CSRF CORS Cross Origin Misconfiguration: reflected Origin, credentialed cross-origin reads, allowlist bypass SAML SSO Assertion Attacks: assertion wrapping, signature validation, audience, ACS boundaries Recommended Flow 1. First confirm the authentication model and session boundaries 2. Then confirm object-level and function-level authorization 3. Then move to token, cross-origin, and protocol details 4. If enterprise federation exists, continue with OAuth, OIDC, or SAML topics Related Categories api-sec Default credentials, username variants, wordlist sizing, and port focus are consolidated in authbypass-authentication-flaws
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills yaklang/auth-sec