From CryptoWiki

  • An Ethereum smart contract language, like Solidity.
  • Vyper versions 0.2.15, 0.2.16 and 0.3.0 were vulnerable to malfunctioning reentrancy locks. A number of stablepools on Curve (alETH/msETH/pETH) using Vyper 0.2.15 have been exploited as a result (30-7-2023). More than $50m was returned by Vyper attackers to Curve, Alchemix, and JPEGD projects (7-8-2023).