{"id":"CVE-2026-120438","aliases":["GHSA-jp52-chwg-2p9p"],"url":"https://o3.security/vulnerability/CVE-2026-120438","summary":"QuickJS-NG before 0.16.0 Heap Buffer Overflow via Proxy ownKeys Enumeration","details":"QuickJS-NG before 0.16.0 contains an integer overflow in js_proxy_get_own_property_names() in quickjs.c that causes a heap buffer overflow on 32-bit hosts. Attackers running JavaScript can return a large array-like object from a Proxy ownKeys trap to wrap the allocation size, causing crashes or potential code execution.","published":"2026-11-02T14:29:00.633Z","modified":"2026-11-03T13:07:39.425240138Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/quickjs-ng/quickjs/commit/252209d99cf112568160548bdcaa98d95e0d0068","label":"quickjs-ng/quickjs@252209d"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/120xxx/CVE-2026-120438.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#L51509"},{"type":"FIX","url":"https://github.com/quickjs-ng/quickjs/commit/252209d99cf112568160548bdcaa98d95e0d0068"},{"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-jp52-chwg-2p9p"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120438"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/quickjs-ng-before-0.16.0-heap-buffer-overflow-via-proxy-ownkeys-enumeration"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-11-03T13:07:39.425240138Z"}}