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Remote code execution in Notesnook Desktop (Electron-based) via stored XSS in the note export-to-PDF flow allows unauthenticated remote attackers to execute arbitrary code when a user opens a maliciously crafted note. The vulnerability stems from unescaped HTML in exported note fields (title, headline, content) that execute in an Electron iframe with nodeIntegration enabled and contextIsolation disabled, escalating browser-based XSS to full RCE. Affects Notesnook Web/Desktop <3.3.15 and iOS/Android <3.3.20. CVSS 9.6 with changed scope (S:C) reflects privilege escalation from browser context to system-level code execution. EPSS and KEV data not provided, but requires user interaction (UI:R) to export/view the malicious note, limiting automated exploitation.
Cross-site scripting in Notesnook Web/Desktop versions prior to 3.3.11 escalates to remote code execution when combined with the application's backup restore feature. The vulnerability triggers when attacker-controlled note headers render through unsafe `dangerouslySetInnerHTML` in the history comparison viewer, exploiting Electron's `nodeIntegration: true` and `contextIsolation: false` configuration to execute arbitrary code on victim systems. Attack requires local access and user interaction (CVSS AV:L/UI:R), but no authentication (PR:N). Vendor-released patch available in version 3.3.11; no public exploit or active exploitation confirmed at time of analysis.
Remote code execution via stored XSS in Notesnook Web Clipper affects all platforms prior to version 3.3.11 (Web/Desktop) and 3.3.17 (Android/iOS). Attackers can inject malicious HTML attributes into clipped web content that execute JavaScript in the application's security context when victims open the clip. On Electron desktop builds, unsafe Node.js integration (nodeIntegration: true, contextIsolation: false) escalates this XSS to full RCE with system-level access. CVSS 9.6 (Critical) reflects network-based attack requiring no authentication but user interaction. No public exploit identified at time of analysis, though attack methodology is detailed in vendor advisory.
Stored cross-site scripting (XSS) in Notesnook mobile versions prior to 3.3.17 allows remote attackers to execute arbitrary JavaScript in the share editor WebView by injecting malicious HTML through unescaped clip metadata (title, subject, or link-preview data). When a victim opens the Notesnook share flow and selects Web clip, the attacker's payload executes with access to local context and user data. No public exploit code or active exploitation has been confirmed, though the vulnerability requires user interaction to trigger.
Stored XSS in Notesnook Mobile and Desktop versions prior to 3.3.9 allows authenticated users to execute arbitrary JavaScript by injecting malicious code into Twitter/X embed URLs through the editor component. An attacker with user account access can craft a malicious note containing a specially crafted embed URL that executes when the note is viewed, potentially compromising user data or session tokens. No patch is currently available for affected versions.
Remote code execution in Notesnook Desktop (Electron-based) via stored XSS in the note export-to-PDF flow allows unauthenticated remote attackers to execute arbitrary code when a user opens a maliciously crafted note. The vulnerability stems from unescaped HTML in exported note fields (title, headline, content) that execute in an Electron iframe with nodeIntegration enabled and contextIsolation disabled, escalating browser-based XSS to full RCE. Affects Notesnook Web/Desktop <3.3.15 and iOS/Android <3.3.20. CVSS 9.6 with changed scope (S:C) reflects privilege escalation from browser context to system-level code execution. EPSS and KEV data not provided, but requires user interaction (UI:R) to export/view the malicious note, limiting automated exploitation.
Cross-site scripting in Notesnook Web/Desktop versions prior to 3.3.11 escalates to remote code execution when combined with the application's backup restore feature. The vulnerability triggers when attacker-controlled note headers render through unsafe `dangerouslySetInnerHTML` in the history comparison viewer, exploiting Electron's `nodeIntegration: true` and `contextIsolation: false` configuration to execute arbitrary code on victim systems. Attack requires local access and user interaction (CVSS AV:L/UI:R), but no authentication (PR:N). Vendor-released patch available in version 3.3.11; no public exploit or active exploitation confirmed at time of analysis.
Remote code execution via stored XSS in Notesnook Web Clipper affects all platforms prior to version 3.3.11 (Web/Desktop) and 3.3.17 (Android/iOS). Attackers can inject malicious HTML attributes into clipped web content that execute JavaScript in the application's security context when victims open the clip. On Electron desktop builds, unsafe Node.js integration (nodeIntegration: true, contextIsolation: false) escalates this XSS to full RCE with system-level access. CVSS 9.6 (Critical) reflects network-based attack requiring no authentication but user interaction. No public exploit identified at time of analysis, though attack methodology is detailed in vendor advisory.
Stored cross-site scripting (XSS) in Notesnook mobile versions prior to 3.3.17 allows remote attackers to execute arbitrary JavaScript in the share editor WebView by injecting malicious HTML through unescaped clip metadata (title, subject, or link-preview data). When a victim opens the Notesnook share flow and selects Web clip, the attacker's payload executes with access to local context and user data. No public exploit code or active exploitation has been confirmed, though the vulnerability requires user interaction to trigger.
Stored XSS in Notesnook Mobile and Desktop versions prior to 3.3.9 allows authenticated users to execute arbitrary JavaScript by injecting malicious code into Twitter/X embed URLs through the editor component. An attacker with user account access can craft a malicious note containing a specially crafted embed URL that executes when the note is viewed, potentially compromising user data or session tokens. No patch is currently available for affected versions.