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CVE-2026-59225

Open WebUI: Arena task endpoints can bypass underlying model access controls

Published: Jul 9, 2026Updated: Jul 10, 2026 Sources: CVE List NVDCWE-862
5.4MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 88.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:LI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-862

Affected Products

openwebui
oss-projectaka open webui
open webuiOn-premWeb App
AI / ML / ai-agent-tooling
open-webui
oss-projectaka open-webui/open-webui
open-webuiOn-premWeb App
AI / ML / ai-agent-tooling

Exploitability

Official Patch Available
Workaround Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
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References

https://github.com/open-webui/open-webui/commit/dc4924b66e655b315e3be4430a3e51b7d5c20acc
github.com
https://github.com/open-webui/open-webui/pull/26046
github.com
https://github.com/open-webui/open-webui/releases/tag/v0.10.0
github.com
and 1 more references View all →

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