Open WebUI load_tool_module_by_id Command Injection Remote Code Execution Vulnerability.
Date: 2026-01
Affected: openwebui/open_webui
Attack vector: command-injection
Category: vulnerability-disclosure
Severity: High
CVE: CVE-2026-0766
CWE: CWE-94
CVSS: 8.8 (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Open WebUI load_tool_module_by_id Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Open WebUI. Authentication is required to exploit this vulnerability. The specific flaw exists within the load_tool_module_by_id function. The issue results from the lack of proper validation of a user-supplied string before using it to execute Python code. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-28257.


Mitigations:

Architectural layers (MAESTRO):