Description


flat through 6.0.1 contains an uncontrolled resource allocation vulnerability in unflatten() that allows attackers to create huge sparse arrays via unbounded numeric keys. Attackers can supply flattened keys such as a.4294967294, causing iteration with forEach, spread or JSON.stringify to block the Node.js event loop.

Related CPE's


Could not find any relations

Weaknesses



CWE-770

CVSS impact metrics


CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

5.9 · Medium

Information


Source identifier

[email protected]

Vulnerability status

Deferred

Published

2026-10-29T14:17:52.157Z

16 hours ago

Last modified

2026-10-29T16:21:34.310Z

14 hours ago