What is CVE-2026-54011?

CVE-2026-54011 is a high-severity vulnerability in Open-webui, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-06-23.

How severe is CVE-2026-54011?

High severity. CVSS v3 base score is 8.7 out of 10.

XSS in Open-webui

CVE-2026-54011

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6,Open WebUI renders Mermaid blocks from Markdown files in the file preview panel and inserts the generated SVG into the DOM us…

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.

Affected products

Open-webui — versions < 0.9.6

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-54011?: CVE-2026-54011 is a high-severity vulnerability in Open-webui, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-06-23.
How severe is CVE-2026-54011?: High severity. CVSS v3 base score is 8.7 out of 10.