# defu (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
- Weekly downloads: 65M
- Dependents: 39.2K
- Registry: https://www.npmjs.com/package/defu

## Advisories (1)

### [CVE-2026-35209](https://cve.now/CVE-2026-35209): defu: Prototype pollution via \`proto\` key in defaults argument

- Severity: High 7.5
- Published: Apr 6, 2026
- Affected: fixed in 6.1.5.

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