CVE-2026-3979 MEDIUM

CVE-2026-3979: quickjs-ng quickjs quickjs.c js_iterator_concat_return use after free

Vendor Quickjs-Ng
Product quickjs
Weakness CWE-416
Published March 12, 2026
Last update March 12, 2026
View on NVD All CVEs

CVSS base score

4.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A flaw has been found in quickjs-ng quickjs up to 0.12.1. This affects the function js_iterator_concat_return of the file quickjs.c. This manipulation causes use after free. The attack requires local access. The exploit has been published and may be used. Patch name: daab4ad4bae4ef071ed0294618d6244e92def4cd. Applying a patch is the recommended action to fix this issue.

Key dates

02Disclosure timeline

March 12, 2026 CVE published
March 12, 2026 Record updated