CVE-2026-73250: Improper Neutralization of Special Elements used in a Command

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...

Fake Notepad++ Plugin Delivers MATCHBOIL.V2 in UAC-0099 Attacks

The Computer Emergency Response Team of Ukraine CERT-UA has warned of a new campaign that involves the use of a malicious program that's dressed up as a Notepad++ plugin to compromise Windows systems. The activity has been attributed by the agency to a threat cluster it tracks as UAC-0099 , a...

Notepad++ < 8.9.7 Multiple Vulnerabilities

The version of Notepad++ installed on the remote host is prior to 8.9.7. It is, therefore, affected by multiple vulnerabilities: - A security bypass vulnerability exists in session.xml backupFilePath handling due to an incomplete startswith check. An attacker could exploit this to bypass path...

PT-2026-58886

Name of the Vulnerable Software and Affected Versions Notepad++ versions prior to 8.9.7 Description Notepad++ fails to perform path normalization when validating the backupFilePath attribute from session.xml using the std::wstring::starts with function. This allows the use of parent-directory...

PT-2026-58888

Name of the Vulnerable Software and Affected Versions Notepad++ versions prior to 8.9.7 Description The decompress function in WinGup fails to perform canonical containment validation when joining untrusted ZIP entry names to unzipDestTo. This allows a specially crafted ZIP entry, such as...

PT-2026-58887

Name of the Vulnerable Software and Affected Versions Notepad++ versions prior to 8.9.7 Description The expandNppEnvironmentStrs function in PowerEditor/src/WinControls/StaticDialog/RunDlg/RunDlg.cpp copies a variable name located between $ and into a fixed-size wchar t strMAX PATH stack buffer...

MAL-2026-7329 Malicious code in notepad-monorepo (npm)

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Malicious code in notepad-monorepo (npm)

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Malicious code in notepad-frontend (npm)

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MAL-2026-7328 Malicious code in notepad-frontend (npm)

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Notepad++ 8.9.6.2 < 8.9.6.4 TOCTOU Race Condition (CVE-2026-52885)

The version of Notepad++ installed on the remote host is 8.9.6.2 or 8.9.6.3. It is, therefore, affected by a TOCTOU race condition vulnerability: - A time-of-check time-of-use TOCTOU race condition exists in the HMAC verification of shortcuts.xml. The HMAC check validates the on-disk file at...

CVE-2026-38972

Notepad3 versions through 6.25.822.1 are vulnerable to a DLL search-order hijacking vulnerability in the About-dialog code path located in src/Notepad3.c. The software calls `LoadLibrary(L

CVE-2026-38972

Notepad3 through 6.25.822.1 contains a DLL search-order hijacking vulnerability in the About-dialog code path in src/Notepad3.c. The application calls LoadLibraryL"MSFTEDIT.DLL" with a bare DLL name, which allows a local attacker to place a malicious MSFTEDIT.DLL in the application directory or...

CVE-2026-38972

Notepad3 through 6.25.822.1 contains a DLL search-order hijacking vulnerability in the About-dialog code path in src/Notepad3.c. The application calls LoadLibraryL"MSFTEDIT.DLL" with a bare DLL name, which allows a local attacker to place a malicious MSFTEDIT.DLL in the application directory or...

PT-2026-55312

Name of the Vulnerable Software and Affected Versions Notepad3 versions prior to 6.25.822.2 Description A DLL search-order hijacking issue exists in the About-dialog code path within src/Notepad3.c. The application uses the LoadLibrary function to load MSFTEDIT.DLL using a bare name. This allows ...

CVE-2026-38972

Notepad3 through 6.25.822.1 contains a DLL search-order hijacking vulnerability in the About-dialog code path in src/Notepad3.c. The application calls LoadLibraryL"MSFTEDIT.DLL" with a bare DLL name, which allows a local attacker to place a malicious MSFTEDIT.DLL in the application directory or...

CVE-2026-48770

Notepad++ is a free and open-source source code editor. Prior to 8.9.6.1, a local process in the same interactive Windows session can send a malformed WMCOPYDATA message to Notepad++ using the COPYDATAFULLCMDLINE path. The handler appears to process COPYDATASTRUCT.lpData as an unbounded...

CVE-2026-52885

Notepad++ is a free and open-source source code editor. Prior to 8.9.6.4, NppCommands.cpp checks the HMAC of the on-disk shortcuts.xml at the moment a user command fires Time-of-Check. However, the command payload is taken from the in-memory userCommands vector, which is populated at application...

CVE-2026-48800

Notepad++ is a free and open-source source code editor. Prior to 8.9.6.1, the tag text content inside in shortcuts.xml is read by NppXml::valueaNode Parameters.cpp:3658 in the feedUserCmds function and stored in UserCommand.cmd without any validation. When the user clicks the corresponding entry ...

CVE-2026-48778

Notepad++ is a free and open-source source code editor. Prior to 8.9.6.1, the tag in config.xml is read by NppXml::value Parameters.cpp:6430 and stored in nppGUI.commandLineInterpreter without any validation, whitelist, or digital signature check. When the user triggers IDMFILEOPENCMD File → Open...