CVE-2026-23513 FOSSBilling: Broken Authorization in Client Transaction and Order Listings
Authenticated clients can bypass tenant scoping to retrieve other clients' transaction and order data due to flawed SQL query construction.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-23513?
CVE-2026-23513 is a high-severity missing authorization vulnerability in FOSSBilling, published on 23 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
FOSSBilling is a free, open-source billing and client management system. In versions 0.7.2 and prior, a query-construction flaw in client list endpoints allowed authenticated clients to bypass tenant scoping and retrieve other clients’ data. Details In ServiceTransaction::getSearchQuery() and Order\Service::getSearchQuery(), OR-based search/action filters were appended without grouping, allowing SQL operator precedence to evaluate OR clauses independently of the enforced client_id constraint. Crafted requests could therefore return records and metadata belonging to other clients, including identifiers, amounts, status, timestamps, and related fields. This issue was fixed in version 0.8.0.
Weakness: CWE-863
Which versions are affected by CVE-2026-23513?
How do I fix CVE-2026-23513?
No fix has been published for CVE-2026-23513 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-2026-23513 being exploited?
There is no known exploitation of CVE-2026-23513 in the wild and no public exploit code.
Sources
Also known as GHSA-xcrv-cccw-r65v.