{
  "cveId": "CVE-2026-46625",
  "url": "https://patchblox.com/security/cve/CVE-2026-46625",
  "summary": "CVE-2026-46625 is fixed in node-js-cookie on 1 platform by DEBIAN-CVE-2026-46625 (version 3.0.7\u002B~3.0.6-1), released June 24, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "node-js-cookie: JavaScript Cookie is a JavaScript API for handling cookies, client-side",
  "description": "JavaScript Cookie is a JavaScript API for handling cookies, client-side. Prior to version 3.0.7, js-cookie\u0027s internal assign() helper copies properties with for...in \u002B plain assignment. When the source object is produced by JSON.parse, the JSON object\u0027s \u0022__proto__\u0022 member is an own enumerable property, so the for\u2026in enumerates it and the target[key] = source[key] write triggers the Object.prototype.__proto__ setter on the fresh target ({}). The result is a per-instance prototype hijack: Object.prototype itself is untouched, but the merged attributes object now inherits attacker-controlled keys. Because the consuming set() function then enumerates the merged object with another for...in, every key the attacker placed on the polluted prototype lands in the resulting Set-Cookie string as an attribute pair. The attacker can set domain=, secure=, samesite=, expires=, and path= on cookies whose attributes the developer thought were locked down. This issue has been patched in version 3.0.7.",
  "published": "2026-06-10T22:16:59Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
  "epss": 0.00919,
  "epssPercentile": 0.60505,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "node-js-cookie",
      "release": "Debian 14",
      "fixedVersion": "3.0.7\u002B~3.0.6-1",
      "fix": "DEBIAN-CVE-2026-46625",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-46625",
      "released": "2026-06-24T14:07:24Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}