Privilege escalation in Open-webui

CVE-2026-45675

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, he LDAP and OAuth authentication flows use a TOCTOU (Time-of-Check-Time-of-Use) pattern for first-user admin role assignment…

Vulnerability class: Privilege Escalation

EPSS: 0.001 (29.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-45675?
CVE-2026-45675 is a high-severity vulnerability in Open-webui, classified under Improper Privilege Management. CVSS score: 8.1/10. Published 2026-05-15.
How severe is CVE-2026-45675?
High severity. CVSS v3 base score is 8.1 out of 10.