| Component | Open WebUI |
| Severity | medium (CVSS 4.3) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| Published (NVD) | 2026-10-12 |
| Affected versions | >= 0.9.6, < 0.11.4 read from the advisory text: NVD has not published CPE data yet |
| Fixed in | 0.11.4 |
| Weakness | CWE-639 |
| CISA KEV | not listed |
NVD description
Open WebUI from 0.9.6 before 0.11.4 contains an authorization flaw where the knowledge base file listing does not verify that a supplied directory_id belongs to the requested knowledge base. Users with read access to any knowledge base can supply a retained foreign directory UUID to GET /api/v1/knowledge/{id}/files. The returned breadcrumbs expose folder names, owner user ids and knowledge base ids of that directory and all its ancestors.
What to do
- Upgrade Open WebUI to
0.11.4or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-109287
- https://github.com/open-webui/open-webui/security/advisories/GHSA-jx3w-3pqq-7f3w
- https://www.vulncheck.com/advisories/open-webui-0.9.6-before-0.11.4-information-disclosure-via-unscoped-directory-id
Read more
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