CVE-2026-120438 QuickJS-NG - Integer Overflow

QuickJS-NG < 0.16.0 contains an integer overflow caused by improper handling in js_proxy_get_own_property_names() in quickjs.c, letting attackers running JavaScript cause heap buffer overflow and potential code execution, exploit requires attacker to run JavaScript code.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
View the NVD record ↗

Details

Type
Integer Overflow
Impact
Remote Code Execution, Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2 November 2026
Updated
3 November 2026
Weakness
CWE-190

Vendor fix

Upgrade to version 0.16.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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