CVE-2026-44549

FAUCET Score

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.

First published: May 15, 2026Last modified: May 15, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 0.8.0CPE matchmatch criteria	cpe:2.3:a:openwebui:open_webui::::::::

CVSS Data

CVSS version used by this source: 3.1

7.3HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

Exploitability Score

2.1

Impact Score

5.2

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.32%

Probability of exploitation in next 30 days

EPSS Percentile

24.1%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0032 is in the 30th percentile among its peer group of 890 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

pippatch availablevia ghsa

Product: open-webuiFixed in: 0.8.0

github_advisoryvendor investigatingvia nvd_reference

View patch

Vendor Advisories (1)

pipGHSA-jwf8-pv5p-vhmchigh

Open WebUI has stored XSS in Excel file preview

May 8, 2026

References

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

ExploitVendor Advisory