Access Control Flaw in Open WebUI Artificial Intelligence Platform
CVE-2026-54021

6.3MEDIUM

Key Information:

Vendor

Open-webui

Status
Open-webui
Vendor
CVE Published:
23 June 2026

What is CVE-2026-54021?

The Open WebUI platform, a self-hosted AI solution, has a security issue where an authenticated user can manipulate the url_idx parameter to access unauthorized backends. This flaw allows users to redirect their requests to internal or privileged backends, circumventing intended access limitations. The issue has been resolved in version 0.9.6.

Affected Version(s)

open-webui < 0.9.6

References

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

CVSS V3.1

Score:
6.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.