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    2 vulnerabilities found for Notesnook iOS/Android by streetwriters

    CVE-2026-33976 (GCVE-0-2026-33976)

    Vulnerability from nvd – Published: 2026-03-27 21:26 – Updated: 2026-04-03 03:55
    VLAI
    Title
    Notesnook vulnerable to RCE via stored XSS in Web Clipper rendering
    Summary
    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.
    Severity
    9.7 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    • CWE-94 - Improper Control of Generation of Code ('Code Injection')
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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        {
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            {
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              "version": "\u003c 3.3.11"
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    CVE-2026-33976 (GCVE-0-2026-33976)

    Vulnerability from cvelistv5 – Published: 2026-03-27 21:26 – Updated: 2026-04-03 03:55
    VLAI
    Title
    Notesnook vulnerable to RCE via stored XSS in Web Clipper rendering
    Summary
    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.
    Severity
    9.7 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    • CWE-94 - Improper Control of Generation of Code ('Code Injection')
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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