CVE-2026-45346: Open WebUI: Stored Cross-Site Scripting in SVG Renderer

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-05-15 · updated 2026-06-17
Weakness: CWE-80

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.6.31, there is a Cross-Site Scripting vulnerability in Open WebUI SVG renderer implementation. This vulnerability is fixed in 0.6.31.

Affected products

open-webui: before 0.6.31 — fixed in 0.6.31

How to fix

Upgrade to a fixed version: open-webui 0.6.31. Check the vendor advisory for mitigations.

References

https://github.com/open-webui/open-webui/security/advisories/GHSA-r29h-37fj-x2w6
https://github.com/open-webui/open-webui/security/advisories/GHSA-r29h-37fj-x2w6

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