fccview jotty up to 1.21.x /api/app-icons/ filename path traversal

Summaryinfo

A vulnerability was found in fccview jotty up to 1.21.x. It has been declared as critical. The impacted element is an unknown function of the file /api/app-icons/. The manipulation of the argument filename results in path traversal. This vulnerability is identified as CVE-2026-42564. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in fccview jotty up to 1.21.x. It has been classified as critical. Affected is some unknown processing of the file /api/app-icons/. The manipulation of the argument filename with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

jotty·page is a self-hosted app for your checklists and notes. Prior to 1.22.0, an unauthenticated path traversal vulnerability exists in /api/app-icons/[filename]. The filename route parameter is joined into a filesystem path without traversal/boundary validation, allowing file reads outside data/uploads/app-icons/. This vulnerability is fixed in 1.22.0.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-42564 since 04/28/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Upgrading to version 1.22.0 eliminates this vulnerability.

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Productinfo

Vendor

• fccview

Name

• jotty

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21

Website

• Product: https://github.com/fccview/jotty/

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