| Component | Open WebUI |
| Severity | medium (CVSS 5) |
| CVSS vector | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L |
| Published (NVD) | 2026-10-12 |
| Affected versions | >= 0.6.0, < 0.11.4 read from the advisory text: NVD has not published CPE data yet |
| Fixed in | 0.11.4 |
| Weakness | CWE-863 |
| CISA KEV | not listed |
NVD description
Open WebUI from 0.6.0 before 0.11.4 contains an improper access control vulnerability in has_access_to_file that lets former knowledge base collaborators keep file access via stale cached knowledge base references. Attackers with read or write grants can download removed files through the file content endpoint or delete them, including from the owner's private knowledge bases.
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-2026-109285
- https://github.com/open-webui/open-webui/security/advisories/GHSA-9cxp-636w-4997
- https://www.vulncheck.com/advisories/open-webui-0.6.0-before-0.11.4-improper-access-control-via-stale-file-metadata
Read more
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