CVE-2026-48778
HIGH 7.8EPSS 0.6%
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 v3.1
- 7.8 HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS
- 0.62% chance of exploitation in the next 30 days, 47th percentile
- Published
- 2026-06-26
- Updated
- 2026-06-29
Proof-of-concept exploits (3)
- atiilla/Notepad-8.9.6-PoC6★ · 2026-05-28
- XK3NF4/CVE-2026-487787★ · 2026-05-30
- kavin-jindal/CVE-2026-48778-PoC0★ · 2026-05-31