Vulnerability in Open-webui
CVE-2026-56400
open-webui before 0.3.14 contains a cross-origin resource sharing misconfiguration allowing arbitrary origins with allow_origins=* and authenticated requests to the /api/v1/functions endpoint. Attackers can execute arbitrary code on the op…
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H.
Affected products
- Open-webui — versions 0, 0.3.14
Weakness classification (CWE)
References
- disclosure@vulncheck.com (vendor-advisory)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-56400?
- CVE-2026-56400 is a high-severity vulnerability in Open-webui, classified under Insufficient Session Expiration. CVSS score: 8.3/10. Published 2026-07-15.
- How severe is CVE-2026-56400?
- High severity. CVSS v3 base score is 8.3 out of 10.