Missing Authorization in Open WebUI - #VU130950
Published: May 11, 2026
Vulnerability identifier: #VU130950
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Open WebUI
Open WebUI
Software vendor:
Open WebUI
Open WebUI
Description
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to missing authorization in the tool update endpoint when processing update requests for tool content. A remote privileged user can send a specially crafted update request to execute arbitrary code.
Exploitation requires write access to an existing tool, and the issue bypasses the intended workspace.tools permission boundary for server-side code execution.
Remediation
Install security update from vendor's website.