Gokapi has privilege escalation via incomplete API-key permission revocation on user rank demotion

Summary

A privilege escalation vulnerability in the user rank demotion logic allows a demoted user's existing API keys to retain ApiPermManageFileRequests and ApiPermManageLogs permissions, enabling continued access to upload-request management and log viewing endpoints after the user has been stripped of all privileges.

Impact

Any user who previously held Admin rank and had API keys with ApiPermManageFileRequests or ApiPermManageLogs retains those capabilities after demotion. This allows offboarded or demoted users to:

• Create, list, and delete upload requests
• Read application logs and system status