An Insecure Direct Object Reference (IDOR) vulnerability was identified in the `POST /v1/templates` endpoint of the Lunary API, affecting versions up to 0.8.8. This vulnerability allows authenticated users to create templates in another user’s project by altering the `projectId` query parameter. The root cause of this issue is the absence of server-side validation to ensure that the authenticated user owns the specified `projectId`. The vulnerability has been addressed in version 1.9.23.
Details
| Severity | Base Score | CVE |
|---|---|---|
| HIGH | 7.7 | CVE-2025-4962 |
Exploitation
To exploit this vulnerability, an authenticated user can manipulate the `projectId` parameter in the `POST /v1/templates` request to create templates in projects that do not belong to them. This can be done by intercepting the request and modifying the parameter value to point to another user’s project.
Affected Products
- Lunary API (versions up to 0.8.8): Vulnerable to IDOR, allowing unauthorized access to create templates in other users’ projects.
Mitigation
To mitigate this vulnerability, it is essential to implement server-side validation to ensure that users can only access and modify resources that they own. Upgrading to version 1.9.23 or later will address this issue.