CVE-2026-3979

MEDIUM

quickjs-ng quickjs <=0.12.1 - Use After Free

Title source: llm
STIX 2.1

Description

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.

Scores

CVSS v3 5.3
EPSS 0.0002
EPSS Percentile 4.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-119 CWE-416
Status published
Products (2)
quickjs-ng/quickjs 0.12.0
quickjs-ng/quickjs 0.12.1
Published Mar 12, 2026
Tracked Since Mar 12, 2026