XSS Vulnerability in Open WebUI Affects Offline AI Platform
CVE-2026-44549

7.3HIGH

Key Information:

Vendor

Open-webui

Status
Open-webui
Vendor
CVE Published:
15 May 2026

What is CVE-2026-44549?

The Open WebUI platform, designed for offline artificial intelligence operations, contains a Cross-Site Scripting vulnerability in versions prior to 0.8.0. Specifically, the unsafe previewing of Excel file attachments can lead to the injection of malicious scripts. A specifically crafted XLSX file can exploit the sheetjs function sheet_to_html, causing an unsanitized HTML payload to be added to the Document Object Model (DOM) through @html, thus triggering the XSS attack. This vulnerability has been addressed in version 0.8.0.

Affected Version(s)

open-webui < 0.8.0

References

https://github.com/open-webui/open-webui/security/advisor...
x_refsource_CONFIRM

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.