Description (CNA)
Notesnook is a note-taking app. Prior to version 3.3.11 on Web/Desktop and 3.3.17 on Android/iOS, a stored XSS in the Web Clipper rendering flow can be escalated to remote code execution in the desktop app. The root cause is that the clipper preserves attacker-controlled attributes from the source page’s root element and stores them inside web-clip HTML. When the clip is later opened, Notesnook renders that HTML into a same-origin, unsandboxed iframe using `contentDocument.write(...)`. Event-handler attributes such as `onload`, `onclick`, or `onmouseover` execute in the Notesnook origin. In the desktop app, this becomes RCE because Electron is configured with `nodeIntegration: true` and `contextIsolation: false`. Version 3.3.11 Web/Desktop and 3.3.17 on Android/iOS patch the issue.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| streetwriters / Notesnook Web/Desktop | affected < 3.3.11 |
| streetwriters / Notesnook iOS/Android | affected < 3.3.17 |
CWE
CWE-79, CWE-94
References
ADP enrichment
No English description supplied.
No references supplied.