CVE-2026-44585
MediumCVSS 5.4Exploitation Probability (EPSS)
Low risk21th percentile - higher than 21% of all known CVEs
Summary
In Paymenter prior to version 1.5.0, the ticket creation endpoint accepts a user-supplied service identifier without enforcing ownership validation, allowing authenticated users to create support tickets referencing services belonging to other accounts by modifying the service ID in the request.
Risk Assessment
An attacker can create a support ticket referencing another user's service, potentially causing support staff to review or interact with other customers' services.
Recommendation
Update Paymenter to version 1.5.0 or later.
Other vulnerabilities in Paymenter
See all- CVE-2026-55219Medium
Paymenter versions prior to 1.5.5 have a race condition in the credit payment implementation. The row lock (lockForUpdate()) is executed outside an active database transaction, making it ineffective in MySQL/MariaDB. Concurrent payment requests can read the same credit balance and reuse the same funds.
- CVE-2026-47198High
Paymenter before 1.5.1 has a vulnerability in the checkout component allowing authenticated users to inject arbitrary key-value pairs into server provisioning parameters, potentially overriding resource limits without privileges.
- CVE-2026-44584Medium
Paymenter before version 1.5.0 fails to invalidate the email verification state after an email change. A verified account retains its verified status even after switching to an unverified address. This could lead to abuse of features gated behind verified status.
- CVE-2026-44583Medium
Paymenter is a free open-source webshop solution for hosting services. In versions prior to 1.5.0, the PayPal webhook endpoint /extensions/paypal/webhook processes the PAYPAL-CERT-URL HTTP header without validation, allowing attackers to control server-side HTTP request destinations. This value is passed directly into a server-side HTTP request via file_get_contents without allowlist, validation, or signature verification. The vulnerability allows remote unauthenticated attackers to trigger HTTP GET requests to arbitrary external or internal endpoints, potentially leading to blind SSRF and access to internal network services.
Original NVD description (English source)
Paymenter is a free and open-source webshop solution for management of hosting services. In versions prior to 1.5.0, the ticket creation endpoint accepts a user-supplied service identifier without enforcing ownership validation, allowing authenticated users to create support tickets referencing services belonging to other accounts by modifying the service ID in the request. An attacker could modify the service ID value in the client-side request and successfully create a ticket associated with another user's service. The vulnerability requires authentication and does not provide direct access to service contents or customer data. However, referenced service information could become visible to support personnel handling the ticket. Successful exploitation could allow an authenticated user to: create support tickets referencing services belonging to other users, potentially cause support staff to interact with or review unrelated customer services. The vulnerability did not allow direct access to another user's service, modification of another user's service or retrieval of confidential service data through the vulnerable endpoint itself. This issue has been fixed in version 1.5.0.