{
  "cveId": "CVE-2026-52884",
  "url": "https://patchblox.com/security/cve/CVE-2026-52884",
  "summary": "CVE-2026-52884 is fixed in Notepad\u002B\u002B on 1 platform by Notepad\u002B\u002B 8.9.6.2 (version 8.9.6.2), released May 31, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Notepad\u002B\u002B: CVE-2026-48800 Bypass",
  "description": "Notepad\u002B\u002B is a free and open-source source code editor. In v8.9.6.1, isInTrustedDirectory() does NOT canonicalize the path before checking. It uses a prefix-based check (PathIsPrefix() or equivalent) that matches paths starting with trusted directory strings. A path traversal using ..\\..\\ after a trusted directory prefix passes the check while resolving to an untrusted location. The CVE-2026-48800 patch adds isInTrustedDirectory() validation in Command::run() (RunDlg.cpp) before calling ShellExecute(). This function checks whether the resolved executable path is under a trusted directory.  This vulnerability is fixed in 8.9.6.2.",
  "published": "2026-06-26T21:16:34Z",
  "severity": "",
  "cvss": 7.8,
  "cwe": "CWE-42: Path Equivalence: \u0027filename.\u0027 (Trailing Dot)",
  "epss": 0.00208,
  "epssPercentile": 0.11015,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2026-52884",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "Notepad\u002B\u002B",
      "fixedVersion": "8.9.6.2",
      "fix": "Notepad\u002B\u002B 8.9.6.2",
      "url": "https://patchblox.com/security/fix/windows-app/notepad-.notepad-8.9.6.2",
      "released": "2026-05-31T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}