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CVE-2026-71858

Published Aug 17, 2026 CWE-78 EPSS 0.10% (1th pctl)

Overview

CVE-2026-71858 is a known-severity vulnerability. It was published on August 17, 2026.

Technical Description

Notepad++ is a free and open-source source code editor. Prior to 8.9.7, macros loaded from an attacker-controlled shortcuts.xml bypass the HMAC validation applied to UserDefinedCommands and can invoke Scintilla actions and the internal Open in Default Viewer command in an elevated Notepad++ process, allowing protected file modification and conditional elevated command execution when a local attacker influences settingsDir and a user triggers the macro. This issue is fixed in version 8.9.7.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

GitHub github.com/notepad-plus-plus/notepad-plus-plus/commit/7686e5a3025eaf1fb8e024c2ceb54670ea05f5fb GitHub github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.7 GitHub github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-f4rj-vqq4-wvg4 GitHub github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-f4rj-vqq4-wvg4

Frequently Asked Questions

What is CVE-2026-71858?

CVE-2026-71858 is a known-severity vulnerability. It was published on August 17, 2026.

How severe is CVE-2026-71858?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-71858?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2026-71858?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-71858 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

Autonomous Discovery

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Continuous Pentesting

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Code Review

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HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.
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