What is GHSA-fhg2-q543-9wpq?

GHSA-fhg2-q543-9wpq is a security advisory published by GitHub Security Advisories with High severity. Open WebUI before 0.11.4 contains a stored cross-site scripting vulnerability in...

Which CVE IDs does GHSA-fhg2-q543-9wpq cover?

GHSA-fhg2-q543-9wpq covers the following CVE IDs: CVE-2026-109288. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-fhg2-q543-9wpq?

GHSA-fhg2-q543-9wpq has a CVSS v3 base score of 6.4, published by GitHub Security Advisories.

GHSA-fhg2-q543-9wpqHighCVSS 6.4

Open WebUI before 0.11.4 contains a stored cross-site scripting vulnerability in...

Vendor

GitHub Security Advisories

Published

October 12, 2026

Last Modified

October 12, 2026

🔗 CVE IDs covered (1)

CVE-2026-109288 →

📋 Description

Open WebUI before 0.11.4 contains a stored cross-site scripting vulnerability in MarkdownInlineTokens.svelte, which renders markdown link URLs into anchor hrefs without validating their scheme. Authenticated users can embed javascript: links in shared chats that, when clicked by a victim, steal the victim's JWT from local storage, including admins' tokens.

🔗 References (4)

https://github.com/open-webui/open-webui/security/advisories/GHSA-wf9m-46cp-c6h6
https://nvd.nist.gov/vuln/detail/CVE-2026-109288
https://www.vulncheck.com/advisories/open-webui-before-0.11.4-stored-xss-via-javascript-urls-in-markdown-links
https://github.com/advisories/GHSA-fhg2-q543-9wpq