Open WebUI Allows Arbitrary File Reading and Deletion
Date: 2025-03
Affected: pip/open-webui
Attack vector: auth-bypass
Category: vulnerability-disclosure
Severity: High
CVE: CVE-2024-7043
CWE: CWE-821
CWE-862
CVSS: 8.1 (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N)

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.


Mitigations:

Architectural layers (MAESTRO):