CVE-2026-45398

Open WebUI · Open WebUI

Open WebUI, a self-hosted artificial intelligence platform, is affected by a high-severity security vulnerability requiring immediate attention.

Executive summary

A high-severity security flaw in the Open WebUI platform demands immediate attention to prevent potential unauthorized access or service disruption.

Vulnerability

This is a high-severity vulnerability within the Open WebUI platform; detailed technical specifics are currently pending full disclosure in the official vendor advisory.

Business impact

With a CVSS score of 7.5, this vulnerability could allow attackers to bypass security controls or gain unauthorized access to the application. This poses a risk to the confidentiality and availability of the AI services hosted within the environment.

Remediation

Immediate Action: Apply all security patches released by the vendor for Open WebUI as soon as they become available.

Proactive Monitoring: Monitor application performance and access logs for any signs of unauthorized activity or unusual behavior.

Compensating Controls: Use a Web Application Firewall (WAF) to filter suspicious traffic and block potential exploitation attempts targeting the platform.

Exploitation status

Public Exploit Available: False

Analyst recommendation

Security teams should treat this high-severity vulnerability with urgency. Ensure that the Open WebUI environment is fully updated and that monitoring mechanisms are in place to detect and respond to any signs of compromise.