Security Audit & Protocol Verification
This report summarizes the comprehensive security audit performed on the VelumX Protocol infrastructure, encompassing the Relayer Network, SDK architecture, and Clarity smart contracts.1. Audit Methodology
The assessment employed a multi-layered security verification process:- Static Analysis: Automated and manual review of the TypeScript and Clarity codebases.
- Dynamic Analysis: Testing typical attack vectors (SQLi, XSS, Reentrancy) in a simulated testnet environment.
- Economic Stress Testing: Verifying the integrity of the fee engine and relayer solvency under extreme oracle volatility.
2. High-Level Risk Assessment
| Component | Security Status | Primary Controls |
|---|---|---|
| Relayer Auth | 🟢 Verified | Supabase JWT with asymmetric JWKS rotation. |
| Data Persistence | 🟢 Verified | Prisma ORM with strict parameterized querying. |
| Smart Contracts | 🟢 Verified | Stacks-native sponsorship with atomic fee settlement. |
| SDK Credentials | 🟢 Verified | Required Server-Side Proxy enforcement. |
3. Findings & Remediations
[VX-2026-001] Production CORS Configuration
Severity: MediumComponent: Relayer API Gateway
Description: The initial development configuration allowed for dynamic origin resolution which could lead to unauthorized cross-origin requests in production.
Remediation: Reconfigured the middleware to enforce a strict whitelist of verified Dashboard and dApp domains.
[VX-2026-002] Client-Side Credential exposure
Severity: High (Mitigated)Component: SDK Initialization
Description: Early versions of the SDK allowed for API Key storage in the browser environment.
Remediation: Implemented the Secure Proxy Pattern. The SDK now prohibits the inclusion of secret keys in client bundles, requiring a server-side handshake.
4. Operational Security Assumptions
The security of the VelumX protocol relies on the following operational assumptions:- Developer Integrity: Developers must implement the Secure Proxy correctly to prevent key leakage.
- Oracle Reliability: The multi-oracle price engine assumes that at least one primary source (CoinGecko/Binance) remains uncompromised.
- Master Key Protection: The VelumX Master Key (for relayer derivation) is managed via encrypted environment injection and is never stored in source control.
5. Formal Verification & Compliance
[!IMPORTANT] Audit Status: Internal verification is complete. External Third-Party Audits of the v5 Registry Architecture are scheduled for Q3 2026.Developers wishing to review the full security specifications should consult the Technical Architecture and Throttling Quotas modules.