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Vulnerability · Published Jan 19, 2026 · Assigned by VulDB

CVE-2026-1144quickjs-ng quickjs Atomics Ops quickjs.c use after free

Medium 6.3

In plain English

A medium-severity use-after-free in quickjs from quickjs-ng. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)0.4%top 63.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

A vulnerability was detected in quickjs-ng quickjs up to 0.11.0. Affected is an unknown function of the file quickjs.c of the component Atomics Ops Handler. The manipulation results in use after free. The attack can be executed remotely. The exploit is now public and may be used. The patch is identified as ea3e9d77454e8fc9cb3ef3c504e9c16af5a80141. Applying a patch is advised to resolve this issue.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.23quickjs-ng0.11.0-r1ALPINE-CVE-2026-1144
Alpine:v3.24quickjs-ng0.11.0-r2ALPINE-CVE-2026-1144
Debian:13quickjsno fix listedDEBIAN-CVE-2026-1144
Debian:14quickjsno fix listedDEBIAN-CVE-2026-1144
Ubuntu:25.10quickjsno fix listedUBUNTU-CVE-2026-1144
Ubuntu:26.04:LTSquickjsno fix listedUBUNTU-CVE-2026-1144
Ubuntu:26.10quickjsno fix listedUBUNTU-CVE-2026-1144

Affected products (as reported)

VendorProductVersions
quickjs-ng quickjs 0.10.20.30.40.50.60.70.8

Weakness: CWE-416, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

References