🛡️ CVE-2026-42214
🟠 CVSS 7.8 — High ⚠️ Exploit Public CWE-94 NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Notepad Next is a cross-platform, reimplementation of Notepad++. Prior to version 0.14, NotepadNext's detectLanguageFromExtension() function interpolates a file's extension directly into a Lua script without sanitization. An attacker can craft a filename whose extension contains Lua code, which executes automatically when the victim opens the file in NotepadNext. Because luaL_openlibs() is called unconditionally, the full os, io, and package libraries are available to the injected code, enabling arbitrary command execution. This issue has been patched in version 0.14.

Details

Severity HIGH
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE CWE-94
Public Exploit ⚠️ Yes
Source NVD
Published 2026-05-07
Updated 2026-06-02
Modified 2026-05-12

Affected Packages

Software From version Fixed in
notepad-next — 0.14
unknown — —

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