CVE-2026-48800
7.8 · HIGHOverview
CVE-2026-48800 is a high-severity vulnerability affecting notepad-plus-plus notepad\+\+. It was published on June 26, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
Notepad++ is a free and open-source source code editor. Prior to 8.9.6.1, the <Command> tag text content inside <UserDefinedCommands> in shortcuts.xml is read by NppXml::value(aNode) (Parameters.cpp:3658) in the feedUserCmds() function and stored in UserCommand._cmd without any validation. When the user clicks the corresponding entry in the Run menu, NppCommands.cpp:4264 creates a Command object with string2wstring(ucmd.getCmd()) and calls run(), which invokes ShellExecute (RunDlg.cpp:221) with the attacker-controlled string as the executable path. The injected command appears as a normal menu item in the Run menu, making it a viable persistence mechanism. This vulnerability is fixed in 8.9.6.1.
Remediation
Check the references section for vendor advisories and patches from notepad-plus-plus. Update notepad\+\+ to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| notepad-plus-plus | notepad\+\+ | >= 0, < 8.9.6.1 | Affected |
References
Frequently Asked Questions
What is CVE-2026-48800?
CVE-2026-48800 is a high-severity vulnerability affecting notepad-plus-plus notepad\+\+. It was published on June 26, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).
How severe is CVE-2026-48800?
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-48800?
Check the references section for vendor advisories and patches from notepad-plus-plus. Update notepad\+\+ to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-48800?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-48800 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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