{"id":"CVE-2026-120439","aliases":["GHSA-9wv5-5cgr-grj6"],"url":"https://o3.security/vulnerability/CVE-2026-120439","summary":"QuickJS-NG before 0.16.0 Heap Buffer Overflow via TypedArray.prototype.sort","details":"QuickJS-NG before 0.16.0 contains an integer overflow in js_typed_array_sort() in quickjs.c that allows attackers to cause a heap buffer overflow on 32-bit hosts. Attackers who can run JavaScript can call TypedArray.prototype.sort with a comparator on a typed array near 2^30 elements, wrapping the allocation size and writing indices past the buffer to crash or potentially execute code.","published":"2026-11-02T14:29:01.345Z","modified":"2026-11-03T13:07:39.855912042Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/quickjs-ng/quickjs/commit/e93cca611908e12b824ec85fbee6b31a5ee61568","label":"quickjs-ng/quickjs@e93cca6"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/120xxx/CVE-2026-120439.json"},{"type":"PACKAGE","url":"https://github.com/quickjs-ng/quickjs"},{"type":"ARTICLE","url":"https://github.com/quickjs-ng/quickjs/blob/v0.15.1/quickjs.c#L60032"},{"type":"FIX","url":"https://github.com/quickjs-ng/quickjs/commit/e93cca611908e12b824ec85fbee6b31a5ee61568"},{"type":"ADVISORY","url":"https://github.com/quickjs-ng/quickjs/releases/tag/v0.16.0"},{"type":"ADVISORY","url":"https://github.com/quickjs-ng/quickjs/security/advisories/GHSA-9wv5-5cgr-grj6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120439"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/quickjs-ng-before-0.16.0-heap-buffer-overflow-via-typedarray-prototype-sort"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-11-03T13:07:39.855912042Z"}}