Notepad++: Arbitrary Code Execution via config.xml commandLineInterpreter_CVE-2026-48778

7.8 / 10

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Description

Notepad++ is a free and open-source source code editor. Prior to 8.9.6.1, the <GUIConfig name="commandLineInterpreter"> tag in config.xml is read by NppXml::value() (Parameters.cpp:6430) and stored in _nppGUI._commandLineInterpreter without any validation, whitelist, or digital signature check. When the user triggers IDM_FILE_OPEN_CMD (File → Open Containing Folder → cmd), NppCommands.cpp:228 creates a Command object with this value and calls run(), which invokes ShellExecute (RunDlg.cpp:221) with the attacker-controlled string as the executable path. This vulnerability is fixed in 8.9.6.1.

Basic Information

ID CVE-2026-48778

Source GitHub_M

Published Jun 26, 2026 at 20:21

Affected Product

Vendor notepad-plus-plus

Product notepad-plus-plus

Version < 8.9.6.1

Affected Versions notepad-plus-plus notepad-plus-plus < 8.9.6.1

CWE Classification

CWE-78

References

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    "published": "2026-06-26T20:21:17.254Z",
    "modified": "2026-06-26T20:21:17.254Z",
    "type": "cve",
    "title": "Notepad++: Arbitrary Code Execution via config.xml commandLineInterpreter",
    "source": "GitHub_M",
    "references": "https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-7hm3-wp5q-ccv9\nhttps://github.com/notepad-plus-plus/notepad-plus-plus/commit/24c7b5c63cece76dbc8c4f2607a27ebfe22fa614",
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