# CVE-2026-88005

## Summary

- **CVE ID:** CVE-2026-88005
- **Severity:** MEDIUM
- **CVSS Score:** 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
- **CWE:** CWE-863
- **Published:** Sep 10, 2026
- **Last Modified:** Sep 10, 2026

## Description

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 Products

- open-webui — open-webui (>= 0.8.0, < 0.9.0)

## References

- [CNA](https://github.com/open-webui/open-webui/security/advisories/GHSA-4qg5-cxx4-g927)
- [CNA](https://github.com/open-webui/open-webui/pull/23639)
- [CNA](https://github.com/open-webui/open-webui/commit/fb5ef978bfb451c3f2221931e08e54250cec58ca)

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._