High severity7.3GHSA Advisory· Published May 15, 2026

CVE-2026-44721

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, a stored cross-site scripting (XSS) vulnerability that allows any authenticated user with model creation permission (workspace.models) to execute arbitrary JavaScript in the browser of any other user (including admins) who views the malicious model in the chat UI. This vulnerability is fixed in 0.9.0.

Affected products

Openwebui/Open WebuiGHSA
Range: <= 0.8.12

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

github.com/advisories/GHSA-gf5m-wcrh-7928ghsaADVISORY
github.com/open-webui/open-webui/security/advisories/GHSA-gf5m-wcrh-7928nvd
nvd.nist.gov/vuln/detail/CVE-2026-44721ghsa

News mentions

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epss	0.000
exploit	0.000
kev	0.000
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ransomware	0.000