HoangNguyen0403 OWASP Top 10 Security Checklist
Priority: P0 (CRITICAL)
Always-Apply Rules
Apply these on every code write, not during dedicated security reviews:
- No IDOR: Filter every resource query by
owner_idortenantIdalongside any user-supplied ID.findById(params.id)without owner filter immediate P0. - No wildcard CORS: Restrict to explicit allowlisted origins — never
Access-Control-Allow-Origin: *on authenticated routes. - No full entity return: Always project to DTO — never serialize raw ORM output to API response.
- No plaintext secrets in mobile: Never store tokens in
SharedPreferences/UserDefaults— use Keychain/Keystore.
Context-Specific Checklist
Activate when: writing security-sensitive features, reviewing PRs, or doing codebase audits.
Mark each item: ✅ not affected | ⚠️ needs review | 🔴 confirmed finding.
P0 finding caps Security score at 40/100.
Apply framework-specific security skills alongside this checklist. See references/owasp-web.md, references/owasp-api.md, and references/owasp-mobile.md for full detection signals.
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. |
OWASP Mobile Top 10 (2024)
| ID | Risk | Key Detection Signal |
|---|---|---|
| M1 | Improper Credential Usage | API keys in BuildConfig, Info.plist, hardcoded in source. |
| M2 | Inadequate Supply Chain | Unverified SDKs, pods, or packages without lock files. |
| M3 | Insecure Auth/AuthZ | Biometric-only auth without server validation. Local role checks. |
| M4 | Insufficient I/O Validation | WebView loadUrl with user data. Intent data used unvalidated. |
| M5 | Insecure Communication | No cert pinning. cleartextTrafficPermitted=true. ATS exceptions. |
| M6 | Inadequate Privacy | Location/contacts without justification. PII in analytics. |
| M7 | Insufficient Binary Protection | No obfuscation. android:debuggable=true. No root detection. |
| M8 | Security Misconfiguration | Exported components. Backup enabled. Debug endpoints. |
| M9 | Insecure Data Storage | Tokens in SharedPreferences/UserDefaults vs Keychain/Keystore. |
| M10 | Insufficient Cryptography | Hardcoded encryption keys. Deprecated algorithms (DES, RC4). |
References
- OWASP Web App — Full Detection Signals
- OWASP API — Full Detection Signals
- OWASP Mobile — Full Detection Signals
Canonical response anchors
- Additional task-grounded exact anchors: rate limit, IDOR/BOLA, DTO projection
Remediation anchors
- Remediation anchors: DTO projection, CORS, opaque session, JWT expiry, rate limiting