# web3-utils (npm) vulnerabilities

1 known vulnerability (1 high), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Registry: https://www.npmjs.com/package/web3-utils

## Advisories (1)

### [CVE-2024-21505](https://cve.now/CVE-2024-21505): Versions of the package web3-utils before 4.2.1 are vulnerable to Prototype Pollution via the utility functions format and mergeDeep, due…

- Severity: High 7.5
- Published: Mar 25, 2024
- Affected: from 4.0.1, fixed in 4.2.1.

---

Source: cve.now
Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards.
Page: https://cve.now/packages/npm/web3-utils
Site guide for agents: https://cve.now/llms.txt
Uses NVD data; not endorsed by NVD.