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VULNERABILITIES

CVE-2026-88005 Details

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.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/open-webui/open-webui/commit/fb5ef978bfb451c3f2221931e08e54250cec58ca [email protected]Patch
https://github.com/open-webui/open-webui/pull/23639 [email protected]Patch
https://github.com/open-webui/open-webui/security/advisories/GHSA-4qg5-cxx4-g927 [email protected]PatchVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-863Incorrect Authorization[email protected]

Affected Products

ProductVersions
openwebui open webui
>= 0.8.0, < 0.9.0

CPE

  • cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-88005
NVD Published Date:
Sep 10, 2026
NVD Last Modified:
Sep 18, 2026
Source:
[email protected]
CVE-2026-88005 Details - Not Deferred