SEPTEMBER 19, 2026
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Case File

CVE-2026-71858

MEDIUM · CVSS 5.4 EPSS 0.14% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-17 · Last synced 2026-09-16

CyberRota Analysis

AI-Generated

Notepad++ versions prior to 8.9.7 are vulnerable to a macro execution flaw that allows local attackers to bypass HMAC validation on UserDefinedCommands via a manipulated shortcuts.xml file. This can lead to unauthorized file modifications and the execution of elevated commands within the Notepad++ process. Users and administrators of Notepad++ should prioritize updating to version 8.9.7 to mitigate potential risks associated with this vulnerability.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-71858
Severity
MEDIUM
CVSS
5.4
EPSS
0.14%

Original NVD 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.