CVE-2026-52885

Notepad++ Notepad++ v8.9.6.4 fixes a TOCTOU vulnerability (CVE-2026-52885) where the on-disk HMAC of shortcuts.xml is checked at trigger time while the command payload is loaded into memory at startup and never synchronized. An attacker with write access to shortcuts.xml can plant a malicious fil...

CVE-2026-52885 Notepad++ TOCTOU: HMAC Checks Disk, Executes from Memory

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-2026-52885 Notepad++ TOCTOU: HMAC Checks Disk, Executes from Memory

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...

EUVD-2026-39904

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 ...

Exploit for CVE-2026-52885

TOCTOU: HMAC Checks Disk, Executes from Memory Notepad++ v8...

Notepad++ < 8.9.6.1 Multiple Vulnerabilities

The version of Notepad++ installed on the remote host is prior to 8.9.6.1. It is, therefore, affected by multiple vulnerabilities: - A crash caused by any malformed structure that could allow an attacker to cause a denial of service condition. CVE-2026-48770 - An arbitrary code execution...

Notepad++ Path Traversal

The vulnerability of the shortcuts.xml configuration file of the text editor Notepad++ is related to the failure to remove special elements. Exploiting this vulnerability can allow an attacker to execute arbitrary code...