Vulnerability Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.7.0, aanually modifying chat history allows setting the `html` property within document metadata. This causes the frontend to enter a code path that treats document contents as HTML, and render them in an iFrame when the citation is previewed. This allows stored XSS via a weaponized document payload in a chat. The payload also executes when the citation is viewed on a shared chat. Version 0.7.0 fixes the issue.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openwebui | Open Webui | < 0.7.0 |
Related Weaknesses (CWE)
References
- https://github.com/open-webui/open-webui/blob/6f1486ffd0cb288d0e21f41845361924e0Product
- https://github.com/open-webui/open-webui/security/advisories/GHSA-xc8p-9rr6-97r2ExploitVendor Advisory
FAQ
What is CVE-2026-26192?
CVE-2026-26192 is a vulnerability with a CVSS score of 7.3 (HIGH). Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.7.0, aanually modifying chat history allows setting the `html` property within doc...
How severe is CVE-2026-26192?
CVE-2026-26192 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-26192?
Check the references section above for vendor advisories and patch information. Affected products include: Openwebui Open Webui.