CVE-2026-52885: Time-of-check Time-of-use (TOCTOU) Race Condition

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-2026-48770: Out-of-bounds Read

Notepad++ is a free and open-source source code editor. Prior to 8.9.6.1, a local process in the same interactive Windows session can send a malformed WMCOPYDATA message to Notepad++ using the COPYDATAFULLCMDLINE path. The handler appears to process COPYDATASTRUCT.lpData as an unbounded...

CVE-2026-48800: Improper Neutralization of Special Elements used in an OS Command

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 ...

The vulnerability of the isInTrustedDirectory() function in the RunDlg.cpp script of the Notepad++ editor allows a hacker to execute arbitrary code.

The vulnerability of the isInTrustedDirectory function in the RunDlg.cpp script of the Notepad++ text editor is related to the ambiguity of the path handling. Exploiting this vulnerability could allow an attacker to execute arbitrary code...

Exploit for CVE-2026-52885

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

Windows Notepad Markdown Link Exposure Test

This Metasploit auxiliary module is a non-exploit, safety-focused research tool designed to generate a Markdown file for analyzing how Windows Notepad handles external links. It creates a controlled test document containing a user-defined URL and stores it locally for inspection...

Windows Notepad WebDAV UNC Reference Markdown File Generator

This Metasploit auxiliary module is a file-format generation tool intended for security testing of a CVE-2026-20841 related to Windows Notepad Markdown handling. It produces a Markdown file containing a UNC WebDAV-style path embedded as a clickable link for behavioral analysis...

CVE-2026-5525

A stack-based buffer overflow vulnerability exists in Notepad++ version 8.9.3 in the file drop handler component. When a user drags and drops a directory path of exactly 259 characters without a trailing backslash, the application appends a backslash and null terminator without proper bounds...

CVE-2026-6539

Notepad++ 8.9.3 contains a format string injection vulnerability in the Find Results panel handler that allows attackers to cause denial of service and information disclosure by crafting a malicious nativeLang.xml language pack file. Attackers can distribute a poisoned language pack through...

CVE-2026-42214

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...

Notepad++ 8.9.4 / 8.9.5 < 8.9.6 Installer Vulnerability

The version of Notepad++ installed on the remote host is 8.9.4 or 8.9.5. It is, therefore, affected by an installer vulnerability: - A vulnerability exists in the Notepad++ installer affecting versions 8.9.4 and 8.9.5 that could allow an attacker to compromise the installation process...

Notepad++ 8.9.6.1 < 8.9.6.2 Multiple Vulnerabilities

The version of Notepad++ installed on the remote host is 8.9.6.1 prior to 8.9.6.2. It is, therefore, affected by multiple vulnerabilities: - An arbitrary code execution vulnerability exists due to improper handling of shortcuts.xml files. A previous fix in version 8.9.6.1 was incomplete, and a...

📄 Notepad++ 8.9.6 Arbitrary Code Execution

Notepad++ versions 8.9.6 and below proof of concept arbitrary code execution exploit. Exploit Title: Notepad++ 8.9.6 - Arbitrary Code Execution Date: 2026-05-30 Exploit Author: Kavin Jindal Avyukt Security https://www.linkedin.com/in/kavin-jindal/ Vendor Homepage: https://notepad-plus-plus.org...

Exploit for CVE-2026-48800

CVE-2026-48800 — Notepad++ Arbitrary Code Execution PoC Sev...

Exploit for CVE-2026-48778

CVE-2026-48...

Notepad++ 8.9.6 - Arbitrary Code Execution

Exploit Title: Notepad++ 8.9.6 - Arbitrary Code Execution Date: 2026-05-30 Exploit Author: Kavin Jindal Avyukt Security https://www.linkedin.com/in/kavin-jindal/ Vendor Homepage: https://notepad-plus-plus.org Software Link: https://notepad-plus-plus.org/downloads/v8.9.6/ Version: from config.xml...

Notepad++ security vulnerabilities

Notepad++ is an open-source plain-text editor developed by Don Ho of Taiwan, China. Notepad++ has security vulnerabilities, and attackers can exploit these vulnerabilities to execute arbitrary code...

PT-2026-48429

Name of the Vulnerable Software and Affected Versions Notepad++ affected versions not specified Description A zero-click remote code execution RCE issue exists due to path traversal. Path traversal is a technique that allows an attacker to access files and directories that are stored outside the...

The vulnerability of the shortcuts.xml configuration file of the text editor Notepad++ allows a hacker to execute arbitrary code.

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...

The vulnerability of the process-interaction mechanism of the text editor Notepad++, which allows a hacker to trigger a service failure.

The vulnerability of the process-interaction mechanism of the text editor Notepad++ is related to reading beyond the buffer boundaries in memory. Exploiting this vulnerability can allow an attacker to cause a service failure...