Incorrect authorization in Open WebUI - #VU131120
Published: May 12, 2026
Vulnerability identifier: #VU131120
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Open WebUI
Affected software:
Open WebUI
Open WebUI
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to improper access control in /api/v1/utils/code/execute endpoint when handling code execution requests while ENABLE_CODE_EXECUTION is set to false. A remote user can send a specially crafted request containing arbitrary Python code to execute arbitrary code.
Exploitation requires a verified user account and a connected Jupyter server.
Remediation
Install security update from vendor's website.