CVE-2026-59225

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.12 before 0.10.0, an authenticated non-admin user with read access to an arena wrapper model can reach a restricted underlying model through task endpoints such as /api/v1/tasks/moa/completions. The normal chat route resolves arena models before the final chat dispatch and therefore re-checks the selected underlying model. The task routes call utils.chat.generate_chat_completion() directly. In that direct path, arena fallback resolution happens after the wrapper access check and then recurses with bypass_filter=True, skipping the selected submodel's access check. This issue is fixed in version 0.10.0.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/open-webui/open-webui/commit/dc4924b66e655b315e3be4430a3e51b7d5c20acc	Patch
https://github.com/open-webui/open-webui/pull/26046	Issue Tracking Patch
https://github.com/open-webui/open-webui/releases/tag/v0.10.0	Product Release Notes
https://github.com/open-webui/open-webui/security/advisories/GHSA-m3qf-58wf-w979	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-09 17:17

Updated : 2026-07-10 02:44

NVD link : CVE-2026-59225

Mitre link : CVE-2026-59225

CVE.ORG link : CVE-2026-59225

JSON object : View

Products Affected

openwebui

open_webui

CWE

CWE-862

Missing Authorization

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