What is CVE-2026-45385?

CVE-2026-45385 is a medium-severity vulnerability in Open-webui, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-05-15.

How severe is CVE-2026-45385?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Open-webui

CVE-2026-45385

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, an IDOR vulnerability exists in the Channels feature of Open WebUI, allowing any channel member to modify messages sent by o…

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.000 (11.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

Affected products

Open-webui — versions < 0.9.5
Openwebui Open_webui

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

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

Frequently asked questions

What is CVE-2026-45385?: CVE-2026-45385 is a medium-severity vulnerability in Open-webui, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-05-15.
How severe is CVE-2026-45385?: Medium severity. CVSS v3 base score is 4.3 out of 10.