Vulnerability in Open-Webui
CVE-2026-45301
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.3.16, a missing permission check in all files related API endpoints allows any authenticated user to list, access and delete every file uploaded by every user to the platform. This vulnerability is fixed in 0.3.16.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (30.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Open-Webui — versions < 0.3.16
- Openwebui Open Webui
Weakness classification (CWE)
References
- github.com/open-webui/open-webui/security/advisories/GHSA-r8wh-8m7r-fh33 (Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-45301?
- CVE-2026-45301 is a high-severity vulnerability in Open-Webui, classified under Improper Access Control. CVSS score: 8.1/10. Published 2026-05-15.
- How severe is CVE-2026-45301?
- High severity. CVSS v3 base score is 8.1 out of 10.