{"id":"UBUNTU-CVE-2026-120438","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.","modified":"2026-11-04T03:30:03.806567008Z","published":"2026-11-03T00:00:00Z","upstream":["CVE-2026-120438"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-120438"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-120438"},{"type":"REPORT","url":"https://github.com/quickjs-ng/quickjs/blob/v0.15.1/quickjs.c#L51509"},{"type":"REPORT","url":"https://github.com/quickjs-ng/quickjs/commit/252209d99cf112568160548bdcaa98d95e0d0068"},{"type":"REPORT","url":"https://github.com/quickjs-ng/quickjs/releases/tag/v0.16.0"},{"type":"REPORT","url":"https://github.com/quickjs-ng/quickjs/security/advisories/GHSA-jp52-chwg-2p9p"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/quickjs-ng-before-0.16.0-heap-buffer-overflow-via-proxy-ownkeys-enumeration"}],"affected":[{"package":{"name":"quickjs-ng","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/quickjs-ng?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.15.0-1","0.15.1-1","0.16.2-2"],"ecosystem_specific":{"binaries":[{"binary_version":"0.16.2-2","binary_name":"libqjs0"},{"binary_name":"qjs","binary_version":"0.16.2-2"},{"binary_name":"qjs-src","binary_version":"0.16.2-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120438.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}