CVE-2026-48800

Notepad++ is a free and open-source source code editor. Prior to 8.9.6.1, the <Command> tag text content inside <UserDefinedCommands> 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.

• CWE-78

• https://github.com/notepad-plus-plus/notepad-plus-plus/commit/6b3dc52a9245c6d8c6287a8d6d93a30981c05febPatch
• https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-3x3f-3j39-pj3vExploit, Patch, Vendor Advisory
• https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-3x3f-3j39-pj3vExploit, Patch, Vendor Advisory

Published

Jun 26, 2026

Last Modified

Jun 30, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-48793Jellyfin is an open source self hosted media server. Prior t…8.8
• CVE-2026-48794Authelia is an open-source authentication and authorization …1.3
• CVE-2026-48795AdonisJS is a TypeScript-first web framework. From 10.1.3 un…8.6
• CVE-2026-48797Backpropagate is a Python library for fine-tuning large lang…9.3
• CVE-2026-48799Postiz is an AI social media scheduling tool. Prior to 2.21.…7.7
• CVE-2026-4880The Barcode Scanner (+Mobile App) – Inventory manager, Order…9.8
• CVE-2026-48801linkify-it is a links recognition library with full Unicode …7.5
• CVE-2026-48802python-engineio is a Python implementation of the Engine.IO …7.5
• CVE-2026-48804python-socketio is a Python implementation of the Socket.IO …7.5
• CVE-2026-48805Twig is a template language for PHP. Prior to 3.27.0, deprec…9.1
• CVE-2026-48806Twig is a template language for PHP. Prior to 3.27.0, ArrayE…9.1
• CVE-2026-48807Twig is a template language for PHP. Prior to 3.27.0, the sa…9.1