CVE-2026-56400

Description

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.

CVSS Vector

References

• https://github.com/open-webui/open-webui/security/advisories/GHSA-6xcp-7mpr-m7wm
• https://www.vulncheck.com/advisories/open-webui-remote-code-execution-via-cors-misconfiguration-and-session-validation
• https://github.com/open-webui/open-webui/security/advisories/GHSA-6xcp-7mpr-m7wm