What is CVE-2026-45299?

CVE-2026-45299 is a medium-severity vulnerability in Open-webui, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-05-15.

How severe is CVE-2026-45299?

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

XSS in Open-webui

CVE-2026-45299

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.0, the profile_image_url field on the user profile update form accepted arbitrary data: URI values without MIME-type validation…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (1.7th 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:R/S:C/C:L/I:L/A:N.

Affected products

Open-webui — versions < 0.8.0
Openwebui Open_webui

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

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

Frequently asked questions

What is CVE-2026-45299?: CVE-2026-45299 is a medium-severity vulnerability in Open-webui, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-05-15.
How severe is CVE-2026-45299?: Medium severity. CVSS v3 base score is 5.4 out of 10.