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CVE-2026-87016 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:8.1 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/open-webui/open-webui/security/advisories/GHSA-wpmr-8h3q-fwj7	CISA-ADP	ExploitVendor Advisory
https://github.com/open-webui/open-webui/commit/73c1f5806aeb6345dad5de8f5aa26d1f3d0bef80	[email protected]	Patch
https://github.com/open-webui/open-webui/pull/28624	[email protected]	Issue TrackingPatch
https://github.com/open-webui/open-webui/releases/tag/v0.11.1	[email protected]	Release Notes
https://github.com/open-webui/open-webui/security/advisories/GHSA-wpmr-8h3q-fwj7	[email protected]	ExploitVendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-155	Improper Neutralization of Wildcards or Matching Symbols	[email protected]
CWE-287	Improper Authentication	[email protected]

Affected Products

Product	Versions
openwebui open webui	>= 0.6.41, < 0.11.1
CPE cpe:2.3:a:openwebui:open_webui:::::::: Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Sep 15, 2026	Initial Analysis	[email protected]
Sep 14, 2026	CVE Modified	CISA-ADP
Sep 9, 2026	New CVE Received	[email protected]