How much was lost in the Wise Lending V2 hack?

The Wise Lending V2 hack resulted in $66K in losses on February 28, 2026.

What attack technique was used in the Wise Lending V2 exploit?

The Wise Lending V2 exploit utilized Flashloan Exploit. Understanding this attack vector is critical for smart contract auditors and developers building secure DeFi protocols.

How can developers prevent similar smart contract attacks?

Preventing smart contract hacks requires a combination of secure coding practices, thorough security audits, and understanding common attack vectors like reentrancy, oracle manipulation, and access control flaws. Smart Contract Hacking (SCH) provides hands-on training to help developers and auditors identify and prevent vulnerabilities before deployment.

Wise Lending V2 Hack

TOTAL LOST $66K

Low Feb 28, 2026 Flashloan Exploit arbitrum ethereum

Affected Chain arbitrum 2 chains affected

Recovered - No recovery reported

All-Time Rank #1637 By amount stolen

Auditors 3 Prior security audits

Incident Overview

Wise Lending is both a crypto lending platform and a yield-farm aggregator. This combination allows capital from lenders to be leveraged towards other yield-farming dApps

This is classified as a Flash Loans Attacks . Compare similar hacks →

Incident Report

Protocol / Project Wise Lending V2

Date of Incident February 28, 2026

Affected Chain(s) arbitrum ethereum

Attack Technique Flashloan Exploit

Classification Protocol Logic

Protocol Information

Protocol Type Lending

Smart Contract Language Solidity

Protocol Twitter/X @WiseLending

What the Attacker Needed to Succeed

Understanding the prerequisites for this type of attack helps auditors identify protocols that are most at risk and helps developers build better defenses.

Technical Knowledge Deep understanding of flashloan exploit and Solidity and EVM internals

Capital Required Seed capital to cover gas and initial position setup

On-Chain Access Ability to interact with arbitrum, ethereum smart contracts and deploy a custom exploit contract

Protocol Analysis Identification of the exploitable vulnerability in Wise Lending V2's contract logic - root cause: protocol logic

Execution Speed Precise transaction ordering and timing to exploit the vulnerability within a single atomic block

Obfuscation Plan A strategy to launder and move stolen funds - typically through mixers, cross-chain bridges, or decentralized DEX swaps to resist tracing

What Auditors Should Check

Could this have been caught in audit? Likely — with a thorough Flashloan Exploit audit checklist and test coverage

Audited by Audit Report 1, Audit Report 2, Audit Report 3 — still lost $66K. Prior audits don't guarantee safety, especially after post-audit code changes.

If you're auditing a protocol with similar architecture to Wise Lending V2, these are the critical security checks that could have prevented this incident (February 2026).

Verify all logic paths related to Flashloan Exploit are guarded by proper access controls and input validation - see the Flash Loans Attacks attack class for patterns
Review privileged functions (owner, admin, governance) for potential abuse vectors - centralization risks should be documented and bounded with timelocks or multi-sigs

Master these auditing techniques with hands-on labs and real exploit scenarios in the Smart Contract Hacking course.

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Security Audit History

Audit Report 1 Report
Audit Report 2 Report
Audit Report 3 Report

Related Attack Classes

The technique used in this hack maps to these vulnerability classes in our security curriculum:

See all Flash Loans Attacks examples →

Flash Loans Attacks

Threat Assessment

Severity Level

LOW

Attack Vector Flashloan Exploit
Root Cause Protocol Logic
Year 2026

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