PT-2026-60120 · Openwebui · Open-Webui

Published 2026-07-15 · Updated 2026-07-15 · CVE-2026-56400

NVD

CVSS v3.1

8.3

High

Base vector

AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

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 openwebui instance by crafting malicious cross-site requests from attacker-controlled websites when an admin user visits them.

Fix

Insufficient Session Expiration

Weakness Enumeration

CWE-613

Related Identifiers

CVE-2026-56400

Affected Products

Open-Webui

References · 3

• https://github.com/open-webui/open-webui/security/advisories/GHSA-6xcp-7mpr-m7wm · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-56400 · Security Note
• https://vulncheck.com/advisories/open-webui-remote-code-execution-via-cors-misconfiguration-and-session-validation · Note