Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/notepad-plus-plus/notepad-plus-plus/commit/24c7b5c63cece76dbc
- https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-
FAQ
What is CVE-2026-48778?
CVE-2026-48778 is a vulnerability with a CVSS score of 7.8 (HIGH). 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...
How severe is CVE-2026-48778?
CVE-2026-48778 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-48778?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.