CVE-2026-87016
Open WebUI: Sign-in as another user via wildcard characters in the OAuth subject claim on SQLite
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.
INFO
Published Date :
Sept. 9, 2026, 10:18 p.m.
Last Modified :
Sept. 15, 2026, 3:29 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update Open WebUI to version 0.11.1.
- Review OAuth configurations for wildcard characters.
- Monitor user access logs for suspicious activity.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-87016.
| URL | Resource |
|---|---|
| https://github.com/open-webui/open-webui/commit/73c1f5806aeb6345dad5de8f5aa26d1f3d0bef80 | Patch |
| https://github.com/open-webui/open-webui/pull/28624 | Issue Tracking Patch |
| https://github.com/open-webui/open-webui/releases/tag/v0.11.1 | Release Notes |
| https://github.com/open-webui/open-webui/security/advisories/GHSA-wpmr-8h3q-fwj7 | Exploit Vendor Advisory |
| https://github.com/open-webui/open-webui/security/advisories/GHSA-wpmr-8h3q-fwj7 | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-87016 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-87016
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-87016 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-87016 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Sep. 15, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:* versions from (including) 0.6.41 up to (excluding) 0.11.1 Added Reference Type GitHub, Inc.: https://github.com/open-webui/open-webui/commit/73c1f5806aeb6345dad5de8f5aa26d1f3d0bef80 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/open-webui/open-webui/pull/28624 Types: Issue Tracking, Patch Added Reference Type GitHub, Inc.: https://github.com/open-webui/open-webui/releases/tag/v0.11.1 Types: Release Notes Added Reference Type CISA-ADP: https://github.com/open-webui/open-webui/security/advisories/GHSA-wpmr-8h3q-fwj7 Types: Exploit, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/open-webui/open-webui/security/advisories/GHSA-wpmr-8h3q-fwj7 Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Sep. 14, 2026
Action Type Old Value New Value Added Reference https://github.com/open-webui/open-webui/security/advisories/GHSA-wpmr-8h3q-fwj7 Added SSVC {'id': 'CVE-2026-87016', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-09-14T13:43:02.743594Z'} -
New CVE Received by [email protected]
Sep. 09, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-287 Added CWE CWE-155 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/87xxx/CVE-2026-87016.json">CVE-2026-87016</a> Added Reference https://github.com/open-webui/open-webui/commit/73c1f5806aeb6345dad5de8f5aa26d1f3d0bef80 Added Reference https://github.com/open-webui/open-webui/pull/28624 Added Reference https://github.com/open-webui/open-webui/releases/tag/v0.11.1 Added Reference https://github.com/open-webui/open-webui/security/advisories/GHSA-wpmr-8h3q-fwj7