CVE-2026-11943

Akaunting 3.1.21 contains an authenticated improper authorization vulnerability in the common BulkActions dispatcher.

In Akaunting versions <= 3.1.21, low-privileged authenticated users can modify their own account to assign themselves the admin role ID, granting full administrator privileges. This vulnerability is caused by a flaw in the `UpdateUser` job, which processes user-supplied role assignments via an unconditional `roles()->sync()` call without verifying whether the caller is authorized to manage roles. Users only require the default `update-auth-profile` permission to access the self-update path and assign themselves as admins. The API endpoints are properly permission-gated and are not affected by this issue.

In Akaunting, the shared download route (uploads/{id}/download) does not verify that the requested file belongs to the logged-in customer's company. An authenticated portal customer can download other companies' uploaded files by guessing or enumerating media IDs.

Akaunting version 3.1.21 contains an authenticated stored Cross-Site Scripting vulnerability in the report management workflow. A user with permission to create or update reports can store arbitrary HTML/JavaScript in the description field of a report.

Akaunting 3.1.21 contains an authenticated stored cross-site scripting vulnerability in the reusable delete confirmation flow. A user with permission to create or modify records, such as Items, can store HTML/JavaScript in the record name.

A weakness has been identified in Akaunting 3.1.21. The component Invoice PDF Rendering in file config/dompdf.php is affected. Manipulation can lead to server-side request forgery (SSRF). The attack may be launched remotely. The exploit has been made public and could be used. The vendor did not respond.

A cross-site scripting vulnerability was found in Akaunting up to version 3.1.21 in the Invoice/Billing component via the notes argument. Remote attack is possible. Exploit is publicly available. The vendor did not respond.