What is CVE-2026-45365?

CVE-2026-45365 is a medium-severity vulnerability in Open-webui, classified under Improper Authorization. CVSS score: 5.4/10. Published 2026-05-15.

How severe is CVE-2026-45365?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Open-webui

CVE-2026-45365

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.11, an internal-only bypass_filter parameter is exposed on the /openai/chat/completions and /ollama/api/chat HTTP endpoints via…

EPSS: 0.000 (8.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Open-webui — versions < 0.8.11
Openwebui Open_webui

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-45365?: CVE-2026-45365 is a medium-severity vulnerability in Open-webui, classified under Improper Authorization. CVSS score: 5.4/10. Published 2026-05-15.
How severe is CVE-2026-45365?: Medium severity. CVSS v3 base score is 5.4 out of 10.