All vulnerabilities
CVE-2026-109291GHSA-qpqv-xwg8-cqpj

open-webui: Open WebUI 0.6.33 before 0.11.4 Stored XSS via Citation embed_url

open-webui open-webui
Open in ThreatlineRecord JSON
CVSS
8.5High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.28%Chance of exploitation activity in the next 30 days, higher than 19% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in0.11.4Fixed versionCVE List
Published12 Oct 2026Updated 23 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

Open WebUI from 0.6.33 before 0.11.4 contains a cross-site scripting vulnerability that allows authenticated users to execute script in victims' sessions by storing javascript: URLs in citation embed_url fields. Attackers can share a crafted chat whose citation, when clicked, is passed to window.open, letting them steal localStorage.token and act as the victim.

Text from CVE List

Affected versions 2

  • open-webuiaffected: 0.6.33 before 0.11.4CVE List
  • open-webuiunaffected: 0.11.4CVE List

References 2