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      <title>CVE-2026-33955 — Notesnook vulnerable to RCE via stored XSS in Note History diff viewer</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-33955</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; streetwriters Notesnook Web/Desktop&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; streetwriters Notesnook Web/Desktop&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;</content:encoded>
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