CVE-2026-87016

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.41 until 0.11.1, get_user_by_oauth_sub and get_user_by_scim_external_id in backend/open_webui/models/users.py used JSON contains matching that compiled to SQL LIKE substring matching on SQLite. An OAuth subject containing percent or underscore wildcard characters could resolve to a different stored identity, potentially selecting an administrator account and issuing the attacker that account's session; PostgreSQL deployments were not affected. This issue is fixed in version 0.11.1.

• CWE-155
• CWE-287

• https://github.com/open-webui/open-webui/commit/73c1f5806aeb6345dad5de8f5aa26d1f3d0bef80Patch
• https://github.com/open-webui/open-webui/pull/28624Issue Tracking, Patch
• https://github.com/open-webui/open-webui/releases/tag/v0.11.1Release Notes
• https://github.com/open-webui/open-webui/security/advisories/GHSA-wpmr-8h3q-fwj7Exploit, Vendor Advisory
• https://github.com/open-webui/open-webui/security/advisories/GHSA-wpmr-8h3q-fwj7Exploit, Vendor Advisory

Published

Sep 9, 2026

Last Modified

Sep 15, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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