What is CVE-2026-45345?

CVE-2026-45345 is a medium-severity vulnerability in Open-webui, classified under Improper Authorization. CVSS score: 6.5/10. Published 2026-05-15.

How severe is CVE-2026-45345?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Open-webui

CVE-2026-45345

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.5.7, a user can modify another user's model even if its visibility is set to Private. By changing the access permissions during e…

EPSS: 0.000 (9.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

Affected products

Open-webui — versions < 0.5.7
Openwebui Open_webui

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

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

Frequently asked questions

What is CVE-2026-45345?: CVE-2026-45345 is a medium-severity vulnerability in Open-webui, classified under Improper Authorization. CVSS score: 6.5/10. Published 2026-05-15.
How severe is CVE-2026-45345?: Medium severity. CVSS v3 base score is 6.5 out of 10.