enchant97 note-mark up to 0.19.3 HTTP Request Header assets filepath.Base input validation

Summaryinfo

A vulnerability categorized as critical has been discovered in enchant97 note-mark up to 0.19.3. This impacts the function filepath.Base of the file /api/notes/{noteID}/assets of the component HTTP Request Header Handler. The manipulation results in input validation. This vulnerability is identified as CVE-2026-44522. The attack can be executed remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in enchant97 note-mark up to 0.19.3. It has been classified as critical. Affected is the function filepath.Base of the file /api/notes/{noteID}/assets of the component HTTP Request Header Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Note Mark is an open-source note-taking application. From 0.13.0 to before 0.19.4, the Note Mark application allows authenticated users to upload assets to notes via POST /api/notes/{noteID}/assets, where the asset filename is provided through the X-Name HTTP request header. This value is stored directly in the database without any sanitization or validation - no path separator filtering, no directory traversal sequence rejection, and no use of filepath.Base() to strip directory components. The unsanitized name is persisted as-is in the note_assets table (Name column, varchar(80)). When an administrator subsequently runs the data export CLI commands (note-mark migrate export-v1 or note-mark migrate export), the stored asset name is passed directly into filepath.Join() and path.Join() calls as part of the output file path argument to os.Create(). Since Go's filepath.Join() resolves ../ sequences during path normalization, an attacker-controlled asset name containing directory traversal sequences causes the export process to write files to arbitrary locations on the filesystem, completely outside the intended export directory. This vulnerability is fixed in 0.19.4.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-44522 since 05/06/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details are known, but there is no available exploit.

Upgrading to version 0.19.4 eliminates this vulnerability.

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Productinfo

Vendor

• enchant97

Name

• note-mark

Version

• 0.19.0
• 0.19.1
• 0.19.2
• 0.19.3

Website

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

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