CVE-2026-40262
HIGH
8,7
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: required
Scope: changed
Confidentiality: high
Integrity: high
Availability: none
Description
AI Translation Available
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.
79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
StableCommon Consequences
Security Scopes Affected:
Access Control
Confidentiality
Integrity
Availability
Potential Impacts:
Bypass Protection Mechanism
Read Application Data
Execute Unauthorized Code Or Commands
Applicable Platforms
Technologies:
AI/ML, Web Based, Web Server
434
Unrestricted Upload of File with Dangerous Type
DraftCommon Consequences
Security Scopes Affected:
Integrity
Confidentiality
Availability
Potential Impacts:
Execute Unauthorized Code Or Commands
Applicable Platforms
Languages:
ASP.NET, Not Language-Specific, PHP
Technologies:
Web Server
https://github.com/enchant97/note-mark/commit/6bb62842ccb956870b9bf183629eba95e…
https://github.com/enchant97/note-mark/releases/tag/v0.19.2
https://github.com/enchant97/note-mark/security/advisories/GHSA-9pr4-rf97-79qh