{"id":"CVE-2026-120440","published":"2026-11-02T15:17:26.103","lastModified":"2026-11-02T19:34:23.993","description":"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.","cvssScore":5.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","cwes":["CWE-401"],"vendors":[],"products":[],"references":[{"url":"https://github.com/quickjs-ng/quickjs/blob/v0.15.1/quickjs.c#L61154","tags":[]},{"url":"https://github.com/quickjs-ng/quickjs/commit/62951e1bc68711d37aad986ff84ef0fe17038a7e","tags":[]},{"url":"https://github.com/quickjs-ng/quickjs/releases/tag/v0.16.0","tags":[]},{"url":"https://github.com/quickjs-ng/quickjs/security/advisories/GHSA-wm7w-r6qf-3c9w","tags":[]},{"url":"https://www.vulncheck.com/advisories/quickjs-ng-before-0.16.0-memory-leak-via-atomics-store","tags":[]}],"exploitRefs":[{"url":"https://github.com/quickjs-ng/quickjs/blob/v0.15.1/quickjs.c#L61154","tags":[]},{"url":"https://github.com/quickjs-ng/quickjs/commit/62951e1bc68711d37aad986ff84ef0fe17038a7e","tags":[]},{"url":"https://github.com/quickjs-ng/quickjs/releases/tag/v0.16.0","tags":[]},{"url":"https://github.com/quickjs-ng/quickjs/security/advisories/GHSA-wm7w-r6qf-3c9w","tags":[]}],"hasPoc":true,"ai":null}