InvoiceShelf up to 2.4.0 UserPolicy privileges management

Summaryinfo

A vulnerability described as problematic has been identified in InvoiceShelf up to 2.4.0. This vulnerability affects unknown code of the component UserPolicy. Executing a manipulation can lead to privileges management. The identification of this vulnerability is CVE-2026-55610. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in InvoiceShelf up to 2.4.0. It has been declared as problematic. This vulnerability affects an unknown code block of the component UserPolicy. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

InvoiceShelf is an open-source web & mobile app that helps track expenses, payments and create professional invoices and estimates. Prior to version 2.4.1, in InvoiceShelf's multi-company installations, any user who is an Owner of one company can read and overwrite any user account in any other company on the same installation. `GET/PUT /api/v1/users/{user}` resolves the target `User` by global primary key, and `UserPolicy` checks only that the requester owns their own header-company — it never verifies that the target user belongs to that company. This allows cross-tenant disclosure of user data and full account takeover (email/password overwrite + company re-assignment). Version 2.4.1 fixes the issue.

The advisory is available at github.com. This vulnerability was named CVE-2026-55610 since 06/17/2026. The exploitation appears to be easy. The attack can be initiated remotely. Additional levels of successful authentication are needed for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

Upgrading to version 2.4.1 eliminates this vulnerability.

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Productinfo

Name

• InvoiceShelf

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4.0

Website

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

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

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