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CVE-2025-65959— Open WebUI vulnerable to Stored DOM XSS via Note 'Download PDF'

Quick assessment

Affected
open-webui open-webui
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Open WebUI是Open WebUI开源的一个可扩展、功能丰富、用户友好的自托管 WebUI。 Open WebUI 0.6.37之前版本存在跨站脚本漏洞，该漏洞源于存储型跨站脚本攻击，可能导致任意JavaScript执行和会话令牌窃取。

CVSS 8.7 · High EPSS 0.24% · P13

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2025-65959

Vulnerability Information
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Vulnerability Title
Open WebUI vulnerable to Stored DOM XSS via Note 'Download PDF'
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Open WebUI 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Open WebUI是Open WebUI开源的一个可扩展、功能丰富、用户友好的自托管 WebUI。 Open WebUI 0.6.37之前版本存在跨站脚本漏洞，该漏洞源于存储型跨站脚本攻击，可能导致任意JavaScript执行和会话令牌窃取。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
open-webui open-webui < 0.6.37 -

II. Public POCs for CVE-2025-65959

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 5969 chars
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III. Intelligence Information for CVE-2025-65959

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Vendor Advisories for CVE-2025-65959 (1)

IV. Related Vulnerabilities

Same product: open-webui
Same vendor: open-webui
Same weakness: CWE-79

V. Comments for CVE-2025-65959

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