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.

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History

Tue, 11 Aug 2026 22:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Notepad++: Install-time PowerShell command injection through installation path
Weaknesses CWE-77
References
Metrics cvssV4_0

{'score': 5.4, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-08-11T22:04:54.574Z

Reserved: 2026-08-11T17:18:01.598Z

Link: CVE-2026-73250

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-11T23:18:10.320

Modified: 2026-08-11T23:18:10.320

Link: CVE-2026-73250

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses