What is CVE-2026-45346?

CVE-2026-45346 is a medium-severity vulnerability in Open-webui, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 5.4/10. Published 2026-05-15.

How severe is CVE-2026-45346?

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

XSS in Open-webui

CVE-2026-45346

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.6.31, there is a Cross-Site Scripting vulnerability in Open WebUI SVG renderer implementation. This vulnerability is fixed in 0.6…

EPSS: 0.000 (9.2th 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 < 0.6.31
Openwebui Open_webui

Weakness classification (CWE)

CWE-80 — Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

References

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

Frequently asked questions

What is CVE-2026-45346?: CVE-2026-45346 is a medium-severity vulnerability in Open-webui, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 5.4/10. Published 2026-05-15.
How severe is CVE-2026-45346?: Medium severity. CVSS v3 base score is 5.4 out of 10.