# flat-to-nested (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: 11.6K
- Dependents: 91
- Registry: https://www.npmjs.com/package/flat-to-nested

## Advisories (1)

### [CVE-2026-55091](https://cve.now/CVE-2026-55091): flat-to-nested: Prototype pollution in flat-to-nested convert() via proto parent/id key

- Severity: High 7.5
- Published: Sep 14, 2026
- Affected: fixed in 1.1.2.

---

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/flat-to-nested
Site guide for agents: https://cve.now/llms.txt
Uses NVD data; not endorsed by NVD.