The OWASP Application Security Verification Standard (ASVS) is a comprehensive framework defining rigorous security requirements for modern web applications and APIs.

SveltyCMS aligns its security architecture and automated test matrix with OWASP ASVS v4.0.3 Level 1 (Automated / Baseline) and Level 2 (Standard Applications).

---

📊 Verification Summary

ASVS Chapter	Domain	Level 1	Level 2	SveltyCMS Implementation & Verification
V1	Architecture & Threat Modeling	✅	✅	4-layer defense-in-depth (hooks.server.ts), fail-closed API dispatcher, Policy-as-Code.
V2	Authentication	✅	✅	Argon2id (64MB memory cost), 15m lockout after 5 failed attempts, TOTP 2FA, WebAuthn passkeys.
V3	Session Management	✅	✅	CSPRNG 32-char tokens, __Host- cookies, matching logout deletion flags, credential-free caches.
V4	Access Control	✅	✅	Granular RBAC, tenantId partition on all queries, hasPermissionWithRoles authorization guards.
V5	Validation & Sanitization	✅	✅	Strict CSP (script-src 'self'), Valibot schemas, SVG polyglot DOMPurify sanitization.
V6	Stored Cryptography	✅	✅	AES-256-GCM for secrets/TOTP, constant-time HMAC-SHA256 token comparisons, CSPRNG-only.
V7	Error Handling & Logging	✅	✅	Tamper-evident SHA-256 Merkle audit chains, generic error responses without stack traces.
V8	Data Protection	✅	✅	Sensitive attribute stripping (stripPrivilegedUserFields), GDPR data export/erasure endpoints.
V9	Communications	✅	✅	HSTS max-age=31536000; includeSubDomains; preload, COOP/COEP/CORP cross-origin isolation.
V10	Malicious Code	✅	✅	Static AST risk scanner (scripts/scan-security-risk.ts), zero eval/unsafe reflection.
V11	Business Logic	✅	✅	Distributed stampede locks, transaction isolation (rollback: false), rate limiting.
V12	File & Resource Handling	✅	✅	Path traversal normalization, SSRF egress guard (safeFetch), stream abort teardown.
V13	API & Web Service	✅	✅	GraphQL depth limit (8), production introspection block, strict JSON payload parsers.
V14	Configuration	✅	✅	RFC 9116 security.txt, lockfile dependency sync guard, automated OSV.dev supply-chain scan.

---

🛡️ Detailed Chapter Mapping

V1: Architecture, Design and Threat Modeling

• V1.1.1 Secure Architecture: Layered pipeline enforces security hooks before business logic execution.
• V1.4.1 Access Control Architecture: Centralized permissions in src/utils/security/user-attribute-policy.ts and src/routes/api/[...path]/+server.ts.

V2: Authentication Verification

• V2.1.1 Password Strength: Minimum 8 characters with upper, lower, numbers, and special symbols enforced via Auth.validatePasswordStrength.
• V2.2.1 Brute-force Resistance: Automatic 15-minute account lockout after 5 consecutive failed attempts.
• V2.4.1 Credential Storage: Password hashes stored via Argon2id with 64MB memory cost.

V3: Session Management Verification

• V3.2.1 Token Randomness: Cryptographically secure 256-bit entropy generated using globalThis.crypto.getRandomValues().
• V3.4.1 Cookie Security: Strict __Host- prefix on secure HTTPS, SameSite=Strict, HttpOnly=true, and exact attribute matching during session revocation (clearSessionCookies()).

V5: Validation, Sanitization and Encoding

• V5.1.1 Input Validation: Type-safe validation using Valibot schemas across API and server actions.
• V5.2.1 SVG & Rich Text Sanitization: Full polyglot SVG sanitization (DOMPurify + tag whitelist) and Tiptap URI protocol restriction (http, https, mailto, tel).

V6: Stored Cryptography Verification

• V6.2.1 Secret Encryption: All sensitive configuration entries and 2FA TOTP secrets are encrypted at rest using AES-256-GCM.

V9: Communications Verification

• V9.1.1 TLS & Security Headers: Verified via automated test tests/unit/security/observatory-headers.test.ts satisfying Mozilla Observatory A+ standards.

---

🧪 Automated Continuous Verification

SveltyCMS enforces these controls through automated git pre-commit hooks and CI pipelines:

# Full Risk Audit (Static AST + Secret Misuse + OSV.dev + Dependency Check)
bun run risk:audit

# Security Regression Suite (249 test cases)
bun run test:security

# Live Dynamic Fuzzing
bun run security --fuzz --auth