CVE-2026-88006— Open WebUI: Users denied by the OAuth role policy can still sign in via token exchange
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 是一个可扩展、功能丰富且用户友好的自托管 AI 平台。 在 0.8.0 至 0.11.1 版本中，Open WebUI 的 OAuth 令牌交换端点会为提供商的访问令牌签发会话，但该端点没有执行正常 OAuth 登录回调中会运行的 OAuth 角色管理逻辑。因此，那些在正常登录回调中会被拒绝登录或会被降级角色的用户，仍可通过此端点以其现有角色获取一个可用的会话。 该问题已在 0.11.1 版本中修复。
Possible ATT&CK Techniques 1 AI
T1550 · Use Alternate Authentication Material
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I. Basic Information for CVE-2026-88006
Vulnerability Information
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Vulnerability Title
Open WebUI: Users denied by the OAuth role policy can still sign in via token exchange
Source: CVE Program / CVE List V5
Vulnerability Description
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.0 until 0.11.1, Open WebUI's OAuth token exchange endpoint issues a session for a provider access token without running the OAuth role management that the normal OAuth login callback runs. A user whose provider roles the login callback would refuse, or would demote, could still obtain a working session at their existing role through this endpoint. This issue is fixed in version 0.11.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| open-webui | open-webui | >= 0.8.0, < 0.11.1 | - |
|
II. Public POCs for CVE-2026-88006
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-88006 (1)
Vendor Advisories for CVE-2026-88006 (1)
IV. Related Vulnerabilities
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V. Comments for CVE-2026-88006
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