{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:notepad-plus-plus:notepad\\+\\+:8.9.6.1:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "8.9.6.1"
              },
              {
                "last_affected": "8.9.6.1"
              }
            ],
            "source": [
              "CPE_STRING",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "41dd976310db0ba551bb8a2810b60331df3a77f5"
            },
            {
              "fixed": "ea1508855e9c4528f6198ce9d345f13cb759ebf4"
            }
          ],
          "repo": "https://github.com/notepad-plus-plus/notepad-plus-plus",
          "type": "GIT"
        }
      ],
      "versions": [
        "8.9.6.1",
        "= 8.9.6.1"
      ]
    }
  ],
  "aliases": [
    "GHSA-p58x-r3c9-x9p6"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-42"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52884.json"
  },
  "details": "Notepad++ 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.",
  "id": "CVE-2026-52884",
  "modified": "2026-07-15T01:49:04.982822645Z",
  "published": "2026-06-26T20:11:40.227Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52884.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-p58x-r3c9-x9p6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52884"
    },
    {
      "type": "FIX",
      "url": "https://github.com/notepad-plus-plus/notepad-plus-plus/commit/ea1508855e9c4528f6198ce9d345f13cb759ebf4"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Notepad++: CVE-2026-48800 Bypass"
}