CVE-2026-73250
Notepad++: Install-time PowerShell command injection through installation path
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
Notepad++ is a free and open-source source code editor. Prior to 8.9.7, the Notepad++ Windows 11 x64 and ARM64 installer passes the attacker-influenced installation directory `$INSTDIR` from PowerEditor/installer/nppSetup.nsi into a PowerShell `-Command` string used by RegisterMSIX to invoke Add-AppxPackage, allowing PowerShell subexpression syntax such as `$()` in the installation path to execute commands in the installer's security context when the context menu component is selected. This issue is fixed in version 8.9.7.
| CWE | CWE-77 |
| Vendor | notepad-plus-plus |
| Product | notepad-plus-plus |
| Published | Aug 11, 2026 |
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Affected Versions
notepad-plus-plus / notepad-plus-plus
< 8.9.7
References
github.com: https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-gp2r-262h-9hgf github.com: https://github.com/notepad-plus-plus/notepad-plus-plus/commit/3764d5b72664ef95421bc53bcb204f9b977d346b github.com: https://github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.7