CVE-2026-33976 in streetwriters Notesnook

요약 (영어)

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.

책임이 있는

GitHub_M

예약하다

2026. 03. 24.

공개

2026. 03. 28.

엔트리

VulDB provides additional information and datapoints for this CVE:

아이디	취약성	CWE	악용	대책	CVE
354016	streetwriters Notesnook Web Clipper Rendering Flow 크로스 사이트 스크립팅	79	정의되지 않음	공식 수정	CVE-2026-33976