CVE-2026-71858

Description

Notepad++ is a free and open-source source code editor. Prior to 8.9.7, macros loaded from an attacker-controlled shortcuts.xml bypass the HMAC validation applied to UserDefinedCommands and can invoke Scintilla actions and the internal Open in Default Viewer command in an elevated Notepad++ process, allowing protected file modification and conditional elevated command execution when a local attacker influences settingsDir and a user triggers the macro. This issue is fixed in version 8.9.7.

References

• https://github.com/notepad-plus-plus/notepad-plus-plus/commit/7686e5a3025eaf1fb8e024c2ceb54670ea05f5fb
• 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-f4rj-vqq4-wvg4
• https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-f4rj-vqq4-wvg4