CVE-2026-33955
8.6 · HIGHOverview
CVE-2026-33955 is a high-severity vulnerability affecting streetwriters notesnook_desktop. It was published on March 27, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
Notesnook is a note-taking app. Prior to version 3.3.11 on Web/Desktop, a cross-site scripting vulnerability stored in the note history comparison viewer can escalate to remote code execution in a desktop application. The issue is triggered when an attacker-controlled note header is displayed using `dangerouslySetInnerHTML` without secure handling. When combined with the full backup and restore feature in the desktop application, this becomes remote code execution because Electron is configured with `nodeIntegration: true` and `contextIsolation: false`. Version 3.3.11 patches the issue.
Remediation
Check the references section for vendor advisories and patches from streetwriters. Update notesnook_desktop 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 |
|---|---|---|---|
| streetwriters | notesnook_desktop | >= 0, < 3.3.11 | Affected |
Frequently Asked Questions
What is CVE-2026-33955?
CVE-2026-33955 is a high-severity vulnerability affecting streetwriters notesnook_desktop. It was published on March 27, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH).
How severe is CVE-2026-33955?
This vulnerability has a CVSS 3.1 base score of 8.6, 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-2026-33955?
Check the references section for vendor advisories and patches from streetwriters. Update notesnook_desktop 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-2026-33955?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-33955 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.
Automated penetration testing that runs continuously, not just quarterly.
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