CVE-2026-120440

MediumCVSS 5.3/10Last modified Nov 2, 2026

Description

QuickJS-NG before 0.16.0 contains a memory leak vulnerability in js_atomics_store() in quickjs.c that fails to free the converted value when returning a RangeError. Attackers running JavaScript can repeatedly call Atomics.store with a valueOf that detaches or shrinks the buffer to exhaust heap memory and cause denial of service.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness enumeration

CWE-401

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
quickjs-ng	QuickJS-NG	< 0.16.0

References

Timeline

Published: Nov 2, 2026
Last modified: Nov 2, 2026
NVD status: Awaiting Analysis

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