CVE-2026-88005
mediumOpen WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform.
Vendor / product: Openwebui — open webui
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.
CVSS
6.5
6.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Severity source: NVD CVSS v3.1 (security-advisories@github.com)
Timeline (UTC)
Published: 2026-09-10 15:17
Modified: 2026-09-18 14:44
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-10-27 06:52 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
openwebui / open_webui ≥0.8.0 <0.9.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://github.com/open-webui/open-webui/commit/fb5ef978bfb451c3f2221931e08e54250cec58ca
Patch / mitigation: https://github.com/open-webui/open-webui/pull/23639
Patch / mitigation: https://github.com/open-webui/open-webui/security/advisories/GHSA-4qg5-cxx4-g927
References
- https://github.com/open-webui/open-webui/commit/fb5ef978bfb451c3f2221931e08e54250cec58ca security-advisories@github.com
- https://github.com/open-webui/open-webui/pull/23639 security-advisories@github.com
- https://github.com/open-webui/open-webui/security/advisories/GHSA-4qg5-cxx4-g927 security-advisories@github.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:52 UTC · record ↗