Description
QuickJS-NG before 0.16.0 contains an integer overflow in js_proxy_get_own_property_names() in quickjs.c that causes a heap buffer overflow on 32-bit hosts. Attackers running JavaScript can return a large array-like object from a Proxy ownKeys trap to wrap the allocation size, causing crashes or potential code execution.
Published: 2026-11-02
Score: 8.5 High
EPSS: n/a
KEV: No
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Remediation

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Advisories

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History

Mon, 02 Nov 2026 14:30:00 +0000

Type Values Removed Values Added
Description QuickJS-NG before 0.16.0 contains an integer overflow in js_proxy_get_own_property_names() in quickjs.c that causes a heap buffer overflow on 32-bit hosts. Attackers running JavaScript can return a large array-like object from a Proxy ownKeys trap to wrap the allocation size, causing crashes or potential code execution.
Title QuickJS-NG before 0.16.0 Heap Buffer Overflow via Proxy ownKeys Enumeration
First Time appeared Quickjs Project
Quickjs Project quickjs
Weaknesses CWE-190
CPEs cpe:2.3:a:quickjs_project:quickjs:*:*:*:*:*:*:*:*
Vendors & Products Quickjs Project
Quickjs Project quickjs
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.5, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Quickjs Project Quickjs
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-02T14:29:00.633Z

Reserved: 2026-11-02T12:42:15.054Z

Link: CVE-2026-120438

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-02T15:17:25.767

Modified: 2026-11-02T19:34:23.993

Link: CVE-2026-120438

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-02T15:30:14Z

Weaknesses