{"id":"CVE-2026-120439","aliases":["DEBIAN-CVE-2026-120439","EUVD-2026-115199","GHSA-9wv5-5cgr-grj6","GHSA-xffc-9827-rpvc","UBUNTU-CVE-2026-120439"],"status":"published","title":"QuickJS-NG before 0.16.0 Heap Buffer Overflow via TypedArray.prototype.sort","description":"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.","severity":{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00343,"percentile":0.28239,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-190"],"published":"2026-11-02T14:29:01Z","modified":"2026-11-06T19:30:29Z","fixes":[{"ecosystem":"Debian:14","package":"quickjs-ng","fixed_in":["0.16.2-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:14","package":"quickjs-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.16.2-1"}]}],"versions":["0.13.0-1","0.13.0-2","0.13.0-3","0.14.0-1","0.14.0-2","0.14.0-2~bpo13+1","0.14.0-2~bpo13+2","0.15.0-1","0.15.0-1~bpo13+1","0.15.1-1","0.15.1-1~bpo13+1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"quickjs-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.15.0-1","0.15.1-1","0.16.2-2"]}],"products":[{"vendor":"quickjs-ng","product":"quickjs-ng"}],"references":[{"url":"https://github.com/quickjs-ng/quickjs/security/advisories/GHSA-9wv5-5cgr-grj6","tags":["vendor-advisory","exploit","advisory","report"]},{"url":"https://github.com/quickjs-ng/quickjs/commit/e93cca611908e12b824ec85fbee6b31a5ee61568","tags":["patch","fix","report"]},{"url":"https://github.com/quickjs-ng/quickjs/releases/tag/v0.16.0","tags":["release-notes","advisory","report"]},{"url":"https://github.com/quickjs-ng/quickjs/blob/v0.15.1/quickjs.c#L60032","tags":["technical-description","article","report"]},{"url":"https://www.vulncheck.com/advisories/quickjs-ng-before-0.16.0-heap-buffer-overflow-via-typedarray-prototype-sort","tags":["third-party-advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120439","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-xffc-9827-rpvc"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/120xxx/CVE-2026-120439.json","tags":["advisory"]},{"url":"https://github.com/quickjs-ng/quickjs","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-120439","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-120439","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-120439","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-120439","title":"QuickJS-NG before 0.16.0 Heap Buffer Overflow via TypedArray.prototype.sort","description":"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.","status":"published","published":"2026-11-02T14:29:01.345Z","modified":"2026-11-06T19:30:29.306Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-190"],"updated_at":"2026-11-06T20:30:04.265548Z"}],"euvd":[{"id":"EUVD-2026-115199","description":"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.","status":"published","published":"2026-11-02T14:29:01Z","modified":"2026-11-06T19:30:29Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-06T20:06:05.048214Z"}],"ghsa":[{"id":"GHSA-xffc-9827-rpvc","title":"QuickJS-NG before 0.16.0 contains an integer overflow in js_typed_array_sort() in quickjs.c that...","description":"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.","status":"published","published":"2026-11-02T15:31:41Z","modified":"2026-11-02T15:31:46Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"},{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T18:00:16.184668Z"}],"nvd":[{"id":"CVE-2026-120439","description":"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.","status":"published","published":"2026-11-02T15:17:25.937Z","modified":"2026-11-06T20:17:17.073Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-190"],"updated_at":"2026-11-06T22:02:16.10095Z"}],"osv":[{"id":"CVE-2026-120439","title":"QuickJS-NG before 0.16.0 Heap Buffer Overflow via TypedArray.prototype.sort","description":"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.","status":"published","published":"2026-11-02T14:29:01.345Z","modified":"2026-11-08T07:05:58.720726629Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-190"],"updated_at":"2026-11-07T11:15:38.581573Z"},{"id":"DEBIAN-CVE-2026-120439","description":"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.","status":"published","published":"2026-11-02T15:17:25.937Z","modified":"2026-11-07T10:00:45.433671552Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"updated_at":"2026-11-07T10:14:19.880839Z"},{"id":"UBUNTU-CVE-2026-120439","description":"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.","status":"published","published":"2026-11-02T15:17:00Z","modified":"2026-11-05T04:42:52Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"},{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-05T13:33:25.727744Z"}]}}