CVE WatchSep 26, 2026

CVE-2026-85288

Notepad++ is a free and open-source source code editor. Prior to 8.9.8, Notepad++ incompletely enforces shortcuts.xml HMAC validation becaus

CVSS

6.7

Medium

EPSS

0.1%

KEV

—

Exploit Today

0-100

Published: Sep 22, 2026 · Last modified: Sep 26, 2026 · CWE-78 · CWE-345 · CWE-693

EPSS · 30d

0.1%EPSS · 30 days0.1%

2026-10-092026-11-07

Technical description

Notepad++ is a free and open-source source code editor. Prior to 8.9.8, Notepad++ incompletely enforces shortcuts.xml HMAC validation because WM_MACRODLGRUNMACRO, the Run a Macro Multiple Times entry point, calls macroPlayback() without the validation used by command(). A tampered shortcuts.xml macro that is blocked through the Macro menu or a shortcut key can therefore execute through the multi-run dialog and invoke internal Notepad++ commands, including commands that launch external programs, in the current user context. This issue is fixed in version 8.9.8.

Official references

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