An improper access control vulnerability in open-webui/open-webui v0.3.8 allows attackers to view and delete any files. The application does not verify whether the attacker is an administrator, allowing the attacker to directly call the GET /api/v1/files/ interface to retrieve information on all files uploaded by users, which includes the ID values. The attacker can then use the GET /api/v1/files/{file_id} interface to obtain information on any file and the DELETE /api/v1/files/{file_id} interface to delete any file.
The product utilizes a shared resource in a concurrent manner, but it does not correctly synchronize access to the resource.
| Link | Tags |
|---|---|
| https://huntr.com/bounties/c01e0c7f-68d8-45cf-91d2-521c97f33b00 | third party advisory exploit |