CVE-2025-64105 FOSSBilling: IDOR Vulnerability in Support Ticket Creation
Authenticated clients can create support tickets linked to other users' orders due to missing ownership checks, potentially misleading staff actions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-64105?
CVE-2025-64105 is a medium-severity missing authorization vulnerability in FOSSBilling, published on 23 Jun 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
FOSSBilling is a billing and client management system that automates invoicing, payments, and communication for online service businesses. Versions 0.6.21 through 0.7.2 are vulnerable to IDOR through the support ticket creation workflow. By manipulating rel_id when rel_type=order, an authenticated client can create a support ticket that references another client's order they do not own. The ticketCreateForClient() method accepted rel_id without verifying order ownership for non-upgrade tasks, allowing clients to link a new ticket to another client's order by crafting the request. No cron task automatically processes cancel/upgrade requests from ticket relations; staff action is required. This affects integrity and confidentiality: staff could be misled into acting on the wrong order (e.g., cancellation or upgrade requests). While there is no client-to-client order data exposure, order IDs may appear in ticket context. This issue has been fixed in version 0.8.0.
Weakness: CWE-639
Which versions are affected by CVE-2025-64105?
How do I fix CVE-2025-64105?
No fix has been published for CVE-2025-64105 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-64105 being exploited?
There is no known exploitation of CVE-2025-64105 in the wild and no public exploit code.
Sources
Also known as GHSA-rcr8-p92p-9887.