CVE-2026-56400EPSS p42.2%

CVE-2026-56400CVE-2026-56400

openwebui / open_webui

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.

Scoring

CVSS 8.3 ()
VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS0.52% probability of exploitation · percentile 42.2% · 2026-10-05T12:00:23Z
Last modified2026-07-16
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.