What is CVE-2026-54021?

CVE-2026-54021 is a medium-severity vulnerability in Open-webui, classified under Incorrect Authorization. CVSS score: 6.3/10. Published 2026-06-23.

How severe is CVE-2026-54021?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Auth bypass in Open-webui

CVE-2026-54021

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, several direct, index-addressed Ollama proxy routes accept a caller-supplied url_idx path parameter and use it as a raw inde…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

Affected products

Open-webui — versions < 0.9.6

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-54021?: CVE-2026-54021 is a medium-severity vulnerability in Open-webui, classified under Incorrect Authorization. CVSS score: 6.3/10. Published 2026-06-23.
How severe is CVE-2026-54021?: Medium severity. CVSS v3 base score is 6.3 out of 10.