MEDIUM 6.9 NVD
CVE-2026-120440
QuickJS-NG before 0.16.0 contains a memory leak vulnerability in js_atomics_store() in quickjs.c that fails to free the converted value when returning a RangeEr
QuickJS-NG before 0.16.0 contains a memory leak vulnerability in js_atomics_store() in quickjs.c that fails to free the converted value when returning a RangeError. Attackers running JavaScript can repeatedly call Atomics.store with a valueOf that detaches or shrinks the buffer to exhaust heap memory and cause denial of service.
References
- https://github.com/quickjs-ng/quickjs/blob/v0.15.1/quickjs.c#L61154
- https://github.com/quickjs-ng/quickjs/commit/62951e1bc68711d37aad986ff84ef0fe17038a7e
- https://github.com/quickjs-ng/quickjs/releases/tag/v0.16.0
- https://github.com/quickjs-ng/quickjs/security/advisories/GHSA-wm7w-r6qf-3c9w
- https://www.vulncheck.com/advisories/quickjs-ng-before-0.16.0-memory-leak-via-atomics-stor
This medium severity vulnerability with a CVSS score of 6.9 was published on 2026-11-02 via NVD.
vulnfeed aggregates 17991 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.