Ripple Completes XRPL Lending Protocol Re-Audit, Advancing XRP Ledger DeFi Expansion

Ripple has successfully cleared a major milestone for the future of decentralized finance (DeFi) on the XRP Ledger (XRPL) after leading blockchain security company Halborn completed a comprehensive re-audit of the XRPL Lending Protocol. The review confirmed that all previously identified findings were either resolved, acknowledged, or strategically accepted by Ripple’s engineering team, strengthening confidence in the protocol’s security ahead of broader adoption.

The XRPL Lending Protocol, developed under the XLS-0066d standard, is designed to introduce fixed-term, uncollateralized on-chain lending to the XRP Ledger. The protocol enables users to access loans through pooled liquidity held within a Single Asset Vault, creating a foundational DeFi primitive that could significantly expand XRPL’s decentralized finance ecosystem.

Between December 2025 and January 2026, Halborn conducted a detailed diff-based re-audit focused on substantial code changes implemented since the protocol’s previous security review during the summer. The audit aimed to verify that the updated implementation remained compliant with the XLS-0066d specification while maintaining strong security standards.

As part of the assessment, Halborn reviewed transaction validation mechanisms, access controls, state consistency, and parameter verification processes. The security firm utilized a multi-layered methodology that combined specification analysis, code-diff reviews, manual inspections, and automated static testing to evaluate the XRP Ledger’s three-stage transaction processing framework.

The re-audit produced encouraging results, with no critical or high-severity vulnerabilities discovered. Halborn documented five findings, all of which were transparently addressed by Ripple. One issue involved a missing validation check that could have allowed a vault’s total assets to exceed predefined limits through accumulated loan interest. Ripple stated that its developers had independently identified and fixed the problem before the audit began.

Another finding revealed that users could potentially create a LoanBroker on a frozen vault, resulting in unnecessary reserve expenditures. Ripple resolved the issue by implementing an additional freeze check during the transaction preclaim phase.

With every reported finding successfully handled, the XRPL Lending Protocol has overcome a significant technical hurdle. The successful security review reinforces Ripple’s commitment to secure DeFi innovation and marks an important step toward expanding lending and borrowing capabilities across the XRP Ledger ecosystem.