CVE-2026-34222— Open WebUI has Broken Access Control in Tool Valves
Quick assessment
Affected
open-webui open-webui
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Open WebUI是Open WebUI开源的一个可扩展、功能丰富、用户友好的自托管 WebUI。 Open WebUI 0.8.11之前版本存在授权问题漏洞，该漏洞源于工具值存在访问控制不当。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-34222
Vulnerability Information
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Vulnerability Title
Open WebUI has Broken Access Control in Tool Valves
Source: CVE Program / CVE List V5
Vulnerability Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.8.11, there is a broken access control vulnerability in tool values. This issue has been patched in version 0.8.11.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Open WebUI 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Open WebUI是Open WebUI开源的一个可扩展、功能丰富、用户友好的自托管 WebUI。 Open WebUI 0.8.11之前版本存在授权问题漏洞，该漏洞源于工具值存在访问控制不当。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| open-webui | open-webui | < 0.8.11 | - |
|
II. Public POCs for CVE-2026-34222
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-34222 (1)
Vendor Pages for CVE-2026-34222 (1)
IV. Related Vulnerabilities
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Same vendor: open-webui
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CVE-2026-88001
Open WebUI: Server-side fetches reach blocked and internal h -
CVE-2026-88000
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Same weakness: CWE-285
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V. Comments for CVE-2026-34222
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