What are the risks of stETH?

Could you please elaborate on the potential risks associated with stETH? I'm particularly interested in understanding the liquidity risks, as well as any smart contract vulnerabilities that might be present. Additionally, how does the performance of the underlying Ethereum network affect the value and stability of stETH? It would also be helpful to know about any regulatory concerns or compliance issues that investors should be aware of when dealing with stETH. Thank you for your insights.