osv-2026-764
Vulnerability from osv_ossfuzz
Published
2026-05-18 00:08
Modified
2026-05-18 00:08
Summary
Heap-use-after-free in JS_DefineProperty
Details

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=513811188

Crash type: Heap-use-after-free READ 8
Crash state:
JS_DefineProperty
build_backtrace
JS_CallInternal
References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "fixed_range": "e182e3df5c51017a7faa97a654b3f2b9c6330448:d73189dd5a582c19c565774bd56fed4e72d33c99"
      },
      "ecosystem_specific": {
        "severity": "HIGH"
      },
      "package": {
        "ecosystem": "OSS-Fuzz",
        "name": "quickjs",
        "purl": "pkg:generic/quickjs"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "d7ae12ae71dfd6ab2997527d295014a8996fa0f9"
            },
            {
              "fixed": "d73189dd5a582c19c565774bd56fed4e72d33c99"
            }
          ],
          "repo": "https://github.com/bellard/quickjs",
          "type": "GIT"
        }
      ],
      "versions": []
    }
  ],
  "details": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=513811188\n\n```\nCrash type: Heap-use-after-free READ 8\nCrash state:\nJS_DefineProperty\nbuild_backtrace\nJS_CallInternal\n```\n",
  "id": "OSV-2026-764",
  "modified": "2026-05-18T00:08:58.747613Z",
  "published": "2026-05-18T00:08:58.747302Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=513811188"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "Heap-use-after-free in JS_DefineProperty"
}


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Nomenclature

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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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