CVE-2026-88005
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Summary
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.0 until 0.9.0, Open WebUI's OAuth token exchange endpoint issues a session for a provider access token without applying the email domain allowlist that the normal OAuth login callback enforces. An account whose email domain the login callback would refuse could still obtain a working session through this endpoint. This issue is fixed in version 0.9.0.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| open-webui | open-webui | >= 0.8.0, < 0.9.0 | affected |
Weaknesses
- CWE-863: CWE-863: Incorrect Authorization
References
- https://github.com/open-webui/open-webui/security/advisories/GHSA-4qg5-cxx4-g927
- https://github.com/open-webui/open-webui/pull/23639
- https://github.com/open-webui/open-webui/commit/fb5ef978bfb451c3f2221931e08e54250cec58ca
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