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.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-77"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73250.json"
}{
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "8.9.7"
}
],
"source": [
"AFFECTED_FIELD",
"REFERENCES"
]
}
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73250.json"
[
{
"deprecated": false,
"digest": {
"function_hash": "321789678466323583525587903832696399039",
"length": 2313
},
"id": "CVE-2026-73250-77046d11",
"signature_type": "Function",
"signature_version": "v1",
"source": "https://github.com/notepad-plus-plus/notepad-plus-plus/commit/6634650414ff91220a4c353b7fe5ad741af0f9f9",
"target": {
"file": "PowerEditor/src/WinControls/AboutDlg/AboutDlg.cpp",
"function": "AboutDlg::run_dlgProc"
}
},
{
"deprecated": false,
"digest": {
"line_hashes": [
"73934179812655448165055737310699482624",
"165596075505432413455088505965299296812",
"15697846664367097651332048867224774793",
"327363084166932039838311470772824169691",
"27658911648692079515982892510481891031"
],
"threshold": 0.9
},
"id": "CVE-2026-73250-de8dc4ca",
"signature_type": "Line",
"signature_version": "v1",
"source": "https://github.com/notepad-plus-plus/notepad-plus-plus/commit/6634650414ff91220a4c353b7fe5ad741af0f9f9",
"target": {
"file": "PowerEditor/src/WinControls/AboutDlg/AboutDlg.cpp"
}
}
]
"2026-09-11T08:36:49Z"