{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "daab4ad4bae4ef071ed0294618d6244e92def4cd"
            }
          ],
          "repo": "https://github.com/quickjs-ng/quickjs",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "A flaw has been found in quickjs-ng quickjs up to 0.12.1. This affects the function js_iterator_concat_return of the file quickjs.c. This manipulation causes use after free. The attack requires local access. The exploit has been published and may be used. Patch name: daab4ad4bae4ef071ed0294618d6244e92def4cd. Applying a patch is the recommended action to fix this issue.",
  "id": "CVE-2026-3979",
  "modified": "2026-04-01T23:09:30.210165302Z",
  "published": "2026-03-12T04:16:40.440Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/quickjs-ng/quickjs/"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.350414"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.350414"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.769600"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/quickjs-ng/quickjs/issues/1368"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/quickjs-ng/quickjs/issues/1368#issue-4004680962"
    },
    {
      "type": "FIX",
      "url": "https://github.com/quickjs-ng/quickjs/commit/daab4ad4bae4ef071ed0294618d6244e92def4cd"
    },
    {
      "type": "FIX",
      "url": "https://github.com/quickjs-ng/quickjs/pull/1370"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ]
}