CVE-2025-65959

High

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.6.37, a Stored XSS vulnerability was discovered in Open-WebUI's Notes PDF download functionality. An attacker can import a Markdown file containing malicious SVG tags into Notes, allowing them to execute arbitrary JavaScript code and steal session tokens when a victim downloads the note as PDF. This vulnerability can be exploited by any authenticated user, and unauthenticated external attackers can steal session tokens from users (both admin and regular users) by sharing specially crafted markdown files. This vulnerability is fixed in 0.6.37.

SeverityHigh
CVSS8.7
Exploit probability—
ProductOpenwebui Open Webui
PublishedDec 4, 2025
First seenDec 4, 2025

How to fix

Update
  • openwebui open_webui0.6.37 or later
  • open-webui0.6.37 or later

Affected products

ProductAffected versionsFixed in
openwebui open_webuiv < 0.6.370.6.37
open-webuinpmv < 0.6.370.6.37

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