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.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Thu, 29 Oct 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | flat through 6.0.1 Denial of Service via unflatten() Numeric Array Index Keys | |
| First Time appeared |
Flat Project
Flat Project flat |
|
| Weaknesses | CWE-770 | |
| CPEs | cpe:2.3:a:flat_project:flat:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Flat Project
Flat Project flat |
|
| References |
|
|
| Metrics |
cvssV3_1
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-29T13:08:52.215Z
Reserved: 2026-10-29T11:51:51.276Z
Link: CVE-2026-119051
No data.
Status : Deferred
Published: 2026-10-29T14:17:52.157
Modified: 2026-10-29T16:21:34.310
Link: CVE-2026-119051
No data.
OpenCVE Enrichment
Updated: 2026-10-29T15:45:06Z
Weaknesses