CVE-2026-45331

Open WebUI · Open WebUI

A security vulnerability has been identified in the Open WebUI platform, an AI interface designed for self-hosted, offline environments.

Executive summary

The Open WebUI platform contains a high-severity vulnerability that could allow unauthorized actors to compromise the integrity and confidentiality of self-hosted AI services.

Vulnerability

The specific nature of the vulnerability is currently undergoing technical validation. Until further details are disclosed by the vendor, it is treated as a high-risk flaw requiring authenticated or unauthenticated access depending on deployment configuration.

Business impact

Successful exploitation of this vulnerability carries significant risk to organizational AI assets, potentially leading to unauthorized data access or service disruption. With a CVSS score of 8.5, this high-severity rating necessitates immediate attention to prevent the compromise of local AI models and sensitive training data.

Remediation

Immediate Action: Consult the official Open WebUI repository and vendor security advisories to identify and apply the latest security patches.

Proactive Monitoring: Review system and application access logs for anomalous behavior, particularly requests targeting the AI interface or backend API endpoints.

Compensating Controls: Implement strict network segmentation and restrict access to the WebUI interface behind a VPN or authenticated proxy to mitigate exposure.

Exploitation status

Public Exploit Available: false

Analyst recommendation

Given the high CVSS score, administrators must prioritize this issue. Ensure that all instances of Open WebUI are isolated from public exposure and apply all vendor-supplied updates as soon as they become available to minimize the attack surface.