InvoicePlane up to 1.6.3 Guest get_file path traversal

Summaryinfo

A vulnerability was found in InvoicePlane up to 1.6.3. It has been declared as critical. This impacts the function get_file of the component Guest Module. The manipulation results in path traversal. This vulnerability is cataloged as CVE-2026-23491. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in InvoicePlane up to 1.6.3. Affected is the function get_file of the component Guest Module. The manipulation 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:

InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. a path traversal vulnerability exists in the `get_file` method of the `Guest` module's `Get` controller in InvoicePlane up to and including through 1.6.3. The vulnerability allows unauthenticated attackers to read arbitrary files on the server by manipulating the input filename. This leads to the disclosure of sensitive information, including configuration files with database credentials. Version 1.6.4 fixes the issue.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-23491 since 01/13/2026. 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 1.6.4 eliminates this vulnerability. Applying the patch add8bb798dde621f886823065ef1841986543c69 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.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• InvoicePlane

Version

• 1.6.0
• 1.6.1
• 1.6.2
• 1.6.3

License

• open-source

Website

• Product: https://github.com/InvoicePlane/InvoicePlane/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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