DeFi Smart Contract Vulnerabilities Audit Guide

Here are three specific, high-impact DeFi smart contract vulnerabilities suitable for inclusion in a professional security audit report. Each entry includes the vulnerability type, technical mechanism, impact, and remediation.

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1. Price Oracle Manipulation via Low-Liquidity Pools

Vulnerability Type:

External Dependency Failure / Price Oracle Manipulation

Technical Mechanism:

The smart contract uses a decentralized exchange (DEX) pool (e.g., Uniswap V2) as its sole source of truth for asset pricing by calling getReserves() or similar functions. This is vulnerable to sandwich attacks or flash loan attacks where an attacker:

1. Executes a large trade in the DEX pool just before the target contract calculates the price.
2. Calls the vulnerable function (e.g., swap() or deposit()), causing the contract to read the manipulated, skewed