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
References
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
Vulnerability status
Deferred
Published
2026-10-29T14:17:52.157Z
16 hours agoLast modified
2026-10-29T16:21:34.310Z
14 hours ago