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CVE PROGRAM SOURCE RECORD9.0 Critical

CVE-2026-56400

open-webui - Remote Code Execution via CORS Misconfiguration and Session Validation

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

open-webui open-webui

Default version status: unaffected

  • 0 to < 0.3.14affected
  • 0.3.14unaffected
pkg:pypi/open-webui

References