CVE-2026-59225 Details
Description
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.
A vulnerability exists in Open WebUI versions 0.8.12 prior to 0.10.0, allowing authenticated non-admin users with read access to an arena wrapper model to bypass access controls and reach restricted underlying models through certain task endpoints. This issue arises because the task routes skip the necessary access checks for the underlying models, creating an inconsistency that can be exploited. The vulnerability is now fixed in version 0.10.0.
Users can update to Open WebUI version 0.10.0 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 9, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/open-webui/open-webui/commit/dc4924b66e655b315e3be4430a3e51b7d5c20acc | [email protected] | Patch |
| https://github.com/open-webui/open-webui/pull/26046 | [email protected] | Issue TrackingPatch |
| https://github.com/open-webui/open-webui/releases/tag/v0.10.0 | [email protected] | ProductRelease Notes |
| https://github.com/open-webui/open-webui/security/advisories/GHSA-m3qf-58wf-w979 | [email protected] | MitigationVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-862 | Missing Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| openwebui open webui | >= 0.8.12, < 0.10.0 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 10, 2026 | Initial Analysis | [email protected] |
| Jul 9, 2026 | CVE Modified | CISA-ADP |
| Jul 9, 2026 | New CVE Received | [email protected] |