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Vulnerability Details :

CVE-2026-59225

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-09 Jul, 2026 | 17:12
Updated At-09 Jul, 2026 | 18:08
Rejected At-
Credits

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

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:09 Jul, 2026 | 17:12
Updated At:09 Jul, 2026 | 18:08
Rejected At:
▼CVE Numbering Authority (CNA)
Open WebUI: Arena task endpoints can bypass underlying model access controls

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.

Affected Products
Vendor
open-webui
Product
open-webui
Versions
Affected
  • >= 0.8.12, < 0.10.0
Problem Types
TypeCWE IDDescription
CWECWE-862CWE-862: Missing Authorization
Type: CWE
CWE ID: CWE-862
Description: CWE-862: Missing Authorization
Metrics
VersionBase scoreBase severityVector
3.15.4MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
Version: 3.1
Base score: 5.4
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/open-webui/open-webui/security/advisories/GHSA-m3qf-58wf-w979
x_refsource_CONFIRM
https://github.com/open-webui/open-webui/pull/26046
x_refsource_MISC
https://github.com/open-webui/open-webui/commit/dc4924b66e655b315e3be4430a3e51b7d5c20acc
x_refsource_MISC
https://github.com/open-webui/open-webui/releases/tag/v0.10.0
x_refsource_MISC
Hyperlink: https://github.com/open-webui/open-webui/security/advisories/GHSA-m3qf-58wf-w979
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/open-webui/open-webui/pull/26046
Resource:
x_refsource_MISC
Hyperlink: https://github.com/open-webui/open-webui/commit/dc4924b66e655b315e3be4430a3e51b7d5c20acc
Resource:
x_refsource_MISC
Hyperlink: https://github.com/open-webui/open-webui/releases/tag/v0.10.0
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:09 Jul, 2026 | 17:17
Updated At:10 Jul, 2026 | 02:44

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.15.4MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
Primary3.16.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
N/A
Type: Secondary
Version: 3.1
Base score: 5.4
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
Type: Primary
Version: 3.1
Base score: 6.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches
openwebui
openwebui
>>open_webui>>Versions from 0.8.12(inclusive) to 0.10.0(exclusive)
cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-862Secondarysecurity-advisories@github.com
CWE ID: CWE-862
Type: Secondary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/open-webui/open-webui/commit/dc4924b66e655b315e3be4430a3e51b7d5c20accsecurity-advisories@github.com
Patch
https://github.com/open-webui/open-webui/pull/26046security-advisories@github.com
Issue Tracking
Patch
https://github.com/open-webui/open-webui/releases/tag/v0.10.0security-advisories@github.com
Product
Release Notes
https://github.com/open-webui/open-webui/security/advisories/GHSA-m3qf-58wf-w979security-advisories@github.com
Mitigation
Vendor Advisory
Hyperlink: https://github.com/open-webui/open-webui/commit/dc4924b66e655b315e3be4430a3e51b7d5c20acc
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/open-webui/open-webui/pull/26046
Source: security-advisories@github.com
Resource:
Issue Tracking
Patch
Hyperlink: https://github.com/open-webui/open-webui/releases/tag/v0.10.0
Source: security-advisories@github.com
Resource:
Product
Release Notes
Hyperlink: https://github.com/open-webui/open-webui/security/advisories/GHSA-m3qf-58wf-w979
Source: security-advisories@github.com
Resource:
Mitigation
Vendor Advisory

Change History

0
Information is not available yet

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