CVE-2026-88005

MediumCVSS 6.5/10Last modified Sep 18, 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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Weakness enumeration

CWE-863

Affected software

Vendor	Product	Versions
open-webui	open-webui	>= 0.8.0, < 0.9.0

References

Timeline

Published: Sep 10, 2026
Last modified: Sep 18, 2026
NVD status: Analyzed

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