CVE-2026-42214
7.8 · HIGHOverview
CVE-2026-42214 is a high-severity vulnerability affecting dail8859 notepad_next. It was published on May 7, 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 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.
Remediation
Check the references section for vendor advisories and patches from dail8859. Update notepad_next 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 |
|---|---|---|---|
| dail8859 | notepad_next | >= 0, < 0.14 | Affected |
References
Frequently Asked Questions
What is CVE-2026-42214?
CVE-2026-42214 is a high-severity vulnerability affecting dail8859 notepad_next. It was published on May 7, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).
How severe is CVE-2026-42214?
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-2026-42214?
Check the references section for vendor advisories and patches from dail8859. Update notepad_next 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-2026-42214?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-42214 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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