PT-2026-24918 · Git+2 · Quickjs

Im-Razvan · Published 2026-03-12 · Updated 2026-03-12 · CVE-2026-3979

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions quickjs-ng quickjs versions through 0.12.1

Description An issue exists in quickjs-ng quickjs up to version 0.12.1, specifically within the js iterator concat return function located in the quickjs.c file. This manipulation leads to a use-after-free condition. Exploitation requires local access. The exploit has been published and is potentially available for use. The vulnerable function is js iterator concat return.

Recommendations quickjs-ng quickjs versions through 0.12.1: Apply the patch daab4ad4bae4ef071ed0294618d6244e92def4cd to resolve this issue.

Exploit

Fix

Buffer Overflow

Use After Free

Weakness Enumeration

CWE-119

CWE-416

Related Identifiers

CVE-2026-3979

Affected Products

Quickjs

References · 18

• 🔥 https://github.com/quickjs-ng/quickjs/issues/1368#issue-4004680962 · Exploit
• https://github.com/quickjs-ng/quickjs/commit/daab4ad4bae4ef071ed0294618d6244e92def4cd · Patch
• https://github.com/quickjs-ng/quickjs/pull/1370 · Patch
• https://osv.dev/vulnerability/CVE-2026-3979 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-3979 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-3979 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-3979 · Security Note
• https://ubuntu.com/security/CVE-2026-3979 · Vendor Advisory
• https://github.com/quickjs-ng/quickjs/issues/1368 · Note
• https://vuldb.com/?submit.769600 · Note
• https://vuldb.com/?ctiid.350414 · Note
• https://github.com/quickjs-ng/quickjs · Note
• https://t.me/CVEtracker/47225 · Telegram Post
• https://twitter.com/CVEnew/status/2031992337329766783 · Twitter Post
• https://twitter.com/cyberbivash/status/2031962542851928090 · Twitter Post