open-webui Open WebUI up to 0.9.x Task Routes completions utils.chat.generate_chat_completion improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.1$0-$5k2.43-

Summaryinfo

A vulnerability was found in open-webui Open WebUI up to 0.9.x. It has been classified as problematic. Affected is the function utils.chat.generate_chat_completion of the file /api/v1/tasks/moa/completions of the component Task Routes. Performing a manipulation results in improper authentication. This vulnerability is reported as CVE-2026-59225. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in open-webui Open WebUI up to 0.9.x. It has been classified as problematic. This affects the function utils.chat.generate_chat_completion of the file /api/v1/tasks/moa/completions of the component Task Routes. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-59225 since 07/02/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available.

Upgrading to version 0.10.0 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Upgrade: Open WebUI 0.10.0

Timelineinfo

07/02/2026 CVE reserved
07/09/2026 +7 days Advisory disclosed
07/09/2026 +0 days VulDB entry created
07/09/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-59225 (🔒)
GCVE (CVE): GCVE-0-2026-59225
GCVE (VulDB): GCVE-100-377277

Entryinfo

Created: 07/09/2026 20:46
Changes: 07/09/2026 20:46 (55)
Complete: 🔍
Cache ID: 216::103

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