{
  "cveId": "CVE-2026-48800",
  "url": "https://patchblox.com/security/cve/CVE-2026-48800",
  "summary": "CVE-2026-48800 is fixed in Notepad\u002B\u002B on 1 platform by Notepad\u002B\u002B 8.9.6.1 (version 8.9.6.1), released May 26, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Notepad\u002B\u002B: Arbitrary Code Execution via shortcuts.xml UserCommand Injection",
  "description": "Notepad\u002B\u002B is a free and open-source source code editor. Prior to 8.9.6.1, the \u003CCommand\u003E tag text content inside \u003CUserDefinedCommands\u003E in shortcuts.xml is read by NppXml::value(aNode) (Parameters.cpp:3658) in the feedUserCmds() function and stored in UserCommand._cmd without any validation. When the user clicks the corresponding entry in the Run menu, NppCommands.cpp:4264 creates a Command object with string2wstring(ucmd.getCmd()) and calls run(), which invokes ShellExecute (RunDlg.cpp:221) with the attacker-controlled string as the executable path. The injected command appears as a normal menu item in the Run menu, making it a viable persistence mechanism.  This vulnerability is fixed in 8.9.6.1.",
  "published": "2026-06-26T21:16:34Z",
  "severity": "",
  "cvss": 7.8,
  "cwe": "CWE-78: Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
  "epss": 0.00209,
  "epssPercentile": 0.1114,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2026-48800",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "Notepad\u002B\u002B",
      "fixedVersion": "8.9.6.1",
      "fix": "Notepad\u002B\u002B 8.9.6.1",
      "url": "https://patchblox.com/security/fix/windows-app/notepad-.notepad-8.9.6.1",
      "released": "2026-05-26T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}