CVE-2025-64105
MediumCVSS 5.1Exploitation Probability (EPSS)
Low risk18th percentile — higher than 18% of all known CVEs
Summary
FOSSBilling, a billing and client management system, has an IDOR vulnerability in versions 0.6.21 through 0.7.2, allowing authenticated clients to create support tickets referencing other clients' orders. The ticketCreateForClient() method did not verify order ownership, enabling manipulation of rel_id.
Risk Assessment
This vulnerability could mislead staff into acting on the wrong orders, threatening the integrity and confidentiality of data. While there is no client-to-client order data exposure, order IDs may appear in ticket context.
Recommendation
It is recommended to update FOSSBilling to version 0.8.0 to eliminate this vulnerability. Additionally, an audit of existing support tickets should be conducted to verify the correctness of staff actions.
Original NVD description (English source)
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.