CVE-2026-73250Notepad++: Install-time PowerShell command injection through installation path
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.4 MEDIUM (v4.0, CNA)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
- Weakness (CWE)
- CWE-77
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Awaiting Analysis
- Record last updated
- Aug 13, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
notepad-plus-plus notepad-plus-plus notepad_plus_plus:notepad_plus_plus (from the name) | before 8.9.7 | CNA record |
References
- https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-gp2r-262h-9hgfx-refsource-confirm
- https://github.com/notepad-plus-plus/notepad-plus-plus/commit/3764d5b72664ef95421bc53bcb204f9b977d346bx-refsource-misc
- https://github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.7x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.