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I. Basic Information for CVE-2026-33955
Vulnerability Information

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Vulnerability Title
Notesnook vulnerable to RCE via stored XSS in Note History diff viewer
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Notesnook 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Notesnook是Streetwriters开源的一个端到端加密的笔记应用。 Notesnook Web/Desktop 3.3.11之前版本存在代码注入漏洞,该漏洞源于笔记历史比较查看器中存储的跨站脚本漏洞,可能导致在桌面应用程序中升级为远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
streetwritersNotesnook Web/Desktop < 3.3.11 -
II. Public POCs for CVE-2026-33955
#POC DescriptionSource LinkShenlong Link
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default-local-/models/Qwen3-VL-32B-Instruct-AWQ · 8831 chars
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III. Intelligence Information for CVE-2026-33955
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IV. Related Vulnerabilities
V. Comments for CVE-2026-33955

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