enchant97 note-mark up to 0.19.1 SVG File cross site scripting

Summaryinfo

A vulnerability was found in enchant97 note-mark up to 0.19.1 and classified as problematic. Affected by this vulnerability is an unknown functionality of the component SVG File Handler. The manipulation results in cross site scripting. This vulnerability is cataloged as CVE-2026-40262. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in enchant97 note-mark up to 0.19.1. Affected is an unknown code of the component SVG File Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

Note Mark is an open-source note-taking application. In versions 0.19.1 and prior, the asset delivery handler serves uploaded files inline and relies on magic-byte detection for content type, which does not identify text-based formats such as HTML, SVG, or XHTML. These files are served with an empty Content-Type, no X-Content-Type-Options: nosniff header, and inline disposition, allowing browsers to sniff and render active content. An authenticated user can upload an HTML or SVG file containing JavaScript as a note asset, and when a victim navigates to the asset URL, the script executes under the application's origin with access to the victim's authenticated session and API actions. This issue has been fixed in version 0.19.2.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-40262 since 04/10/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 0.19.2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 6bb62842ccb956870b9bf183629eba95e326e5e3 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• enchant97

Name

• note-mark

Version

• 0.19.0
• 0.19.1

License

• open-source

Website

• Product: https://github.com/enchant97/note-mark/

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CPE 2.2info

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