Executive brief
Paymenter, an open-source platform for managing hosting services and webshops, contains a security flaw in its support ticket system. Logged-in users can create support tickets that incorrectly reference services belonging to other customers by manually changing a service ID number. While this does not grant direct access to private data, it could lead to confusion, privacy leaks when support staff review the ticket, or unauthorized service inquiries.
Technical details
The vulnerability is classified as an Insecure Direct Object Reference (IDOR) or Broken Object Level Authorization (BOLA) within the ticket creation endpoint. The root cause is a failure to enforce ownership validation on the user-supplied service identifier during the ticket submission process. An authenticated attacker can intercept and modify the service ID in the request to associate a new ticket with a third-party service. While this does not allow direct data exfiltration or service modification, it permits unauthorized referencing of objects, potentially exposing service metadata to support personnel. This issue is tracked as CWE-639 and CWE-862 and is resolved in version 1.5.0.
Affected products
- Paymenter Paymenter < 1.5.0
Timeline
- 2026-06-10: advisory: GitHub Security Advisory published
- 2026-07-20: disclosed: NVD publication date