{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-120439", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-11-02T12:42:15.449Z", "datePublished": "2026-11-02T14:29:01.345Z", "dateUpdated": "2026-11-02T14:29:01.345Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-11-02T14:29:01.345Z"}, "datePublic": "2026-07-31T00:00:00.000Z", "title": "QuickJS-NG before 0.16.0 Heap Buffer Overflow via TypedArray.prototype.sort", "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Integer Overflow or Wraparound", "cweId": "CWE-190", "type": "CWE"}]}], "affected": [{"vendor": "quickjs-ng", "product": "QuickJS-NG", "packageURL": "pkg:github/quickjs-ng/quickjs", "defaultStatus": "unaffected", "versions": [{"version": "0", "lessThan": "0.16.0", "status": "affected", "versionType": "semver"}], "repo": "https://github.com/quickjs-ng/quickjs"}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:quickjs_project:quickjs:*:*:*:*:*:*:*:*", "versionEndExcluding": "0.16.0"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "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", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.3, "baseSeverity": "HIGH"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "HIGH", "baseScore": 7, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/quickjs-ng/quickjs/security/advisories/GHSA-9wv5-5cgr-grj6", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-9wv5-5cgr-grj6)"}, {"url": "https://github.com/quickjs-ng/quickjs/commit/e93cca611908e12b824ec85fbee6b31a5ee61568", "tags": ["patch"]}, {"url": "https://github.com/quickjs-ng/quickjs/releases/tag/v0.16.0", "tags": ["release-notes"], "name": "QuickJS-NG v0.16.0 Release Notes"}, {"url": "https://github.com/quickjs-ng/quickjs/blob/v0.15.1/quickjs.c#L60032", "tags": ["technical-description"]}, {"name": "VulnCheck Advisory: QuickJS-NG before 0.16.0 Heap Buffer Overflow via TypedArray.prototype.sort", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/quickjs-ng-before-0.16.0-heap-buffer-overflow-via-typedarray-prototype-sort"}], "credits": [{"lang": "en", "value": "Tristan Madani (Talence Security)", "type": "finder"}, {"lang": "en", "value": "Sa\u00fal Ibarra Corretg\u00e9", "type": "remediation developer"}], "x_generator": {"engine": "vulncheck-endgame"}}}}