CVE-2026-44549

Published: May 15, 2026Modified: Jun 17, 2026

8.7

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Exploitability: 2.3 / Impact: 5.8

Source: NVD

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.0, Excel file attachments are previewed in an unsafe way. A crafted XLSX file payload can be used to cause the sheetjs function sheet_to_html to embed an XSS payload into the generated HTML. This is subsequently added to the DOM unsanitized via @html causing the payload to trigger. This vulnerability is fixed in 0.8.0.

Affected (1)

Products: Openwebui: Open Webui

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Openwebui Open Webui	Before 0.8.0

Related CWEs

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (2)

https://github.com/open-webui/open-webui/security/advisories/GHSA-jwf8-pv5p-vhmc

Source: security-advisories@github.com

ExploitVendor Advisory

https://github.com/open-webui/open-webui/security/advisories/GHSA-jwf8-pv5p-vhmc

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

ExploitVendor Advisory

Timeline

No history available yet.