---
id: 1798
title: "Detecting MISO and Opyn’s msg.value reuse vulnerability with Slither"
source_domain: blog.trailofbits.com
source_url: "https://blog.trailofbits.com/2021/12/16/detecting-miso-and-opyns-msg-value-reuse-vulnerability-with-slither/"
published_at: "2021-12-16T18:00:49Z"
tags: ["web3", "smart-contracts", "defi", "static-analysis", "vulnerability-detection", "ethereum", "solidity", "slither"]
phying_url: "https://phying.com/item/1798"
lang: en
---

# Detecting MISO and Opyn’s msg.value reuse vulnerability with Slither

## Summary

After the MISO and Opyn msg.value reuse flaws put millions at risk, Trail of Bits released Slither detectors msg-value-loop and delegatecall-loop that flag such patterns automatically.

## Intelligence Metadata

- **Sources:** blog.trailofbits.com
- **Published:** 2021-12-16T18:00:49Z
- **Original:** https://blog.trailofbits.com/2021/12/16/detecting-miso-and-opyns-msg-value-reuse-vulnerability-with-slither/
- **Phying News:** https://phying.com/item/1798