CVE-2026-120438
highQuickJS-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.
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.
CVSS
7.8
7.8 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-11-02 15:17
Modified: 2026-11-02 19:34
NVD status: Awaiting Analysis
Last synced 1 day ago
Verified against the source API 2026-11-03 07:35 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/quickjs-ng/quickjs/blob/v0.15.1/quickjs.c#L51509 disclosure@vulncheck.com
- https://github.com/quickjs-ng/quickjs/commit/252209d99cf112568160548bdcaa98d95e0d0068 disclosure@vulncheck.com
- https://github.com/quickjs-ng/quickjs/releases/tag/v0.16.0 disclosure@vulncheck.com
- https://github.com/quickjs-ng/quickjs/security/advisories/GHSA-jp52-chwg-2p9p disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/quickjs-ng-before-0.16.0-heap-buffer-overflow-via-pro... disclosure@vulncheck.com
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 07:35 UTC · record ↗