Vulnerability 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.
Related Weaknesses (CWE)
References
- https://github.com/notepad-plus-plus/notepad-plus-plus/commit/3764d5b72664ef9542
- https://github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.7
- https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-
FAQ
What is CVE-2026-73250?
CVE-2026-73250 is a documented vulnerability. 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 PowerEdit...
How severe is CVE-2026-73250?
CVSS scoring is not yet available for CVE-2026-73250. Check NVD for updates.
Is there a patch for CVE-2026-73250?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.