Missing Authorization Affecting open-webui package, versions [,0.9.0)
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- published9 May 2026
- disclosed8 May 2026
- creditClassic298
Introduced: 8 May 2026
NewCVE-2026-44555 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade open-webui to version 0.9.0 or higher.
Overview
open-webui is an Open WebUI
Affected versions of this package are vulnerable to Missing Authorization in the base_model_id process. An attacker can gain unauthorized access to restricted models by creating a new model that chains to a restricted base model and invoking it, causing the server to dispatch requests using privileged credentials. This is only exploitable if the attacker has model creation permissions and a restricted base model exists on the instance.