# underscore (npm) vulnerabilities

2 known vulnerabilities (1 high, 1 low), 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
- Weekly downloads: 42.3M
- Dependents: 54.8K
- Registry: https://www.npmjs.com/package/underscore

## Advisories (2)

### [CVE-2026-27601](https://cve.now/CVE-2026-27601): Underscore.js has unlimited recursion in .flatten and .isEqual, potential for DoS attack

- Severity: High 8.2
- Published: Mar 3, 2026
- Affected: fixed in 1.13.8.

### [CVE-2021-23358](https://cve.now/CVE-2021-23358): Arbitrary Code Injection

- Severity: Low 3.3
- Published: Mar 29, 2021
- Affected: from 1.3.2, fixed in 1.12.1.

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