DOM XSS Vulnerability in Open WebUI Self-Hosted AI Platform
CVE-2025-64495

8.7HIGH

Key Information:

Vendor

Open-webui

Status
Open-webui
Vendor
CVE Published:
8 November 2025

What is CVE-2025-64495?

Open WebUI, a self-hosted artificial intelligence platform, is exposed to a DOM-based Cross-Site Scripting (XSS) vulnerability in versions up to 0.6.34. This issue arises when the 'Insert Prompt as Rich Text' feature is enabled, leading to unsanitized input being directly inserted into the DOM via the .innerHTML property. If an authorized user creates a custom prompt with a malicious payload, it could potentially compromise other users who utilize that prompt. The issue has since been resolved in version 0.6.35, and users are strongly advised to upgrade to this version to mitigate the risk.

Affected Version(s)

open-webui < 0.6.35

References

https://github.com/open-webui/open-webui/security/advisor...
x_refsource_CONFIRM
https://github.com/open-webui/open-webui/commit/eb9c4c0e3...
x_refsource_MISC
https://github.com/open-webui/open-webui/blob/7a83e7dfa36...
x_refsource_MISC

CVSS V3.1

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-64495 : DOM XSS Vulnerability in Open WebUI Self-Hosted AI Platform