Permission Bypass in Open WebUI Affects Tool Management Capabilities
CVE-2026-45395

7.2HIGH

Key Information:

Vendor

Open-webui

Status
Open-webui
Vendor
CVE Published:
15 May 2026

What is CVE-2026-45395?

Open WebUI, an offline artificial intelligence platform, contains a vulnerability in its update endpoint prior to version 0.9.5. The flaw allows unauthorized users, denied tool management permissions, to alter server-side Python code of tools instead of replicating the security checks performed during tool creation. This unauthorized access can lead to untrusted code execution, compromising the security model intended for tool management within the platform. The vulnerability was addressed in version 0.9.5, improving protection against such unauthorized changes.

Affected Version(s)

open-webui < 0.9.5

References

https://github.com/open-webui/open-webui/security/advisor...
x_refsource_CONFIRM

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.