| Component | Open WebUI |
| Severity | high (CVSS 8.1) |
| CVSS vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Published (NVD) | 2026-09-09 |
| Last modified | 2026-09-15 |
| Affected versions | open_webui >= 0.6.41, < 0.11.1 |
| Fixed in | 0.11.1 |
| Weakness | CWE-155CWE-287 |
| CISA KEV | not listed |
NVD 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.
What to do
- Upgrade Open WebUI to
0.11.1or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-87016
- https://github.com/open-webui/open-webui/security/advisories/GHSA-wpmr-8h3q-fwj7
- https://github.com/open-webui/open-webui/commit/73c1f5806aeb6345dad5de8f5aa26d1f3d0bef80
- https://github.com/open-webui/open-webui/pull/28624
- https://github.com/open-webui/open-webui/releases/tag/v0.11.1
Read more
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