CVE-2026-48778: high-severity vulnerability in notepad-plus-plus
Notepad++: Arbitrary Code Execution via config.xml commandLineInterpreter
Published · Updated
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 7.8epss 0.6%
from disclosure to weapon0 days
Published on NVDJun 26
1st PoCMay 30
exploitation probability
0.6%top 52% of all CVEs
observed exploitation
nono source reports it
3 public exploit(s)
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:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
notepad-plus-plus · notepad-plus-pluspublic PoCs found — 3
exploitdbwww.exploit-db.com/exploits/52606unverifiedgithubgithub.com/XK3NF4/CVE-2026-48778★ 7githubgithub.com/kavin-jindal/CVE-2026-48778-PoC★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — notepad-plus-plus
In the same product, most dangerous first.
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