Agent-Skills.md

Agent Skills: OWASP Top 10 Security Checklist

OWASP Top 10 audit checklist for Web Applications (2021) and APIs (2023). Load during any security review, PR review, or codebase audit touching web, mobile backend, or API code. (triggers: security review, OWASP, broken access control, IDOR, BOLA, injection, broken auth, API review, authorization, access control)

UncategorizedID: hoangnguyen0403/agent-skills-standard/common-owasp

Repository

hoangnguyen0403/agent-skills-standard
HoangNguyen0403License: Apache-2.0
362103

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pnpm dlx add-skill https://github.com/HoangNguyen0403/agent-skills-standard/tree/HEAD/.agent/skills/common/common-owasp

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.agent/skills/common/common-owasp/SKILL.md

Skill Metadata

Name
common-owasp
Description
"OWASP Top 10 audit checklist for Web Applications (2021) and APIs (2023). Load during any security review, PR review, or codebase audit touching web, mobile backend, or API code. (triggers: security review, OWASP, broken access control, IDOR, BOLA, injection, broken auth, API review, authorization, access control)"

OWASP Top 10 Security Checklist

Priority: P0 (CRITICAL)

Implementation Guidelines

  • Check A01/API1 first: IDOR is the #1 finding in real codebases — any findById(userInput) without an owner/tenant filter is an immediate P0.
  • Mark each item: ✅ not affected | ⚠️ needs review | 🔴 confirmed finding.
  • P0 finding caps Security score at 40/100 — do not skip any item.
  • Apply framework-specific security skills alongside this checklist.
  • See references/owasp-web.md and references/owasp-api.md for full detection signals per item.

OWASP Web Application Top 10 (2021)

| ID | Risk | Key Detection Signal | | --- | ---- | -------------------- | | A01 | Broken Access Control | findById(params.id) without owner filter. Route without @authorize. | | A02 | Cryptographic Failures | Weak hash (MD5/SHA1) for passwords. HTTP URL hardcoded. No TLS. | | A03 | Injection | String concat in DB queries. Unsanitized input to templates. XSS. | | A04 | Insecure Design | No rate limiting on auth. Missing input validation at entry points. | | A05 | Security Misconfiguration | CORS *. Debug mode in prod. Missing security headers (CSP, HSTS). | | A06 | Vulnerable Components | CVE in dependency audit. Unreviewed new direct dependency. | | A07 | Auth Failures | JWT without expiry. No session invalidation on logout. | | A08 | Data Integrity Failures | Unverified JWT/cookie. Deserialization of untrusted input. | | A09 | Logging & Monitoring | No audit log on: deletion, password change, privilege escalation. | | A10 | SSRF | HTTP client with user-controlled URL and no allowlist. |

OWASP API Security Top 10 (2023)

| ID | Risk | Key Detection Signal | | ----- | ---- | -------------------- | | API1 | Broken Object Level Auth (BOLA) | Resource by user-supplied ID without AND owner_id = currentUser. | | API2 | Broken Authentication | JWT missing exp. Token not revoked on logout. Bearer in URL. | | API3 | Broken Property Level Auth | Full ORM entity returned. No DTO projection. Mass assignment. | | API4 | Unrestricted Resource Consumption | No server-enforced limit/pageSize. No throttle on heavy ops. | | API5 | Broken Function Level Auth | Admin route reachable without role guard. | | API6 | Unrestricted Business Flow | No verification on OTP/checkout/password-reset flows. | | API8 | Security Misconfiguration | Stack trace in response. CORS * on authenticated routes. | | API9 | Improper Inventory Management | Deprecated/undocumented endpoints still reachable. | | API10 | Unsafe API Consumption | Third-party response used without schema validation. |

Anti-Patterns

  • No IDOR: Filter every resource query by owner_id or tenantId alongside the user-supplied ID.
  • No wildcard CORS: Restrict to explicit, allowlisted origins — never * on authenticated routes.
  • No full entity return: Always project to a DTO — never serialize raw ORM output to the API response.

References