Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.6.6, a vulnerability in the way certain html tags in chat messages are rendered allows attackers to inject JavaScript code into a chat transcript. The JavaScript code will be executed in the user's browser every time that chat transcript is opened, allowing attackers to retrieve the user's access token and gain full control over their account. Chat transcripts can be shared with other users in the same server, or with the whole open-webui community if "Enable Community Sharing" is enabled in the admin panel. If this exploit is used against an admin user, it is possible to achieve Remote Code Execution on the server where the open-webui backend is hosted. This can be done by creating a new function which contains malicious python code. This vulnerability also affects chat transcripts uploaded to `https://openwebui.com/c/<user>/<chat_id>`, allowing for wormable stored XSS in https[:]//openwebui[.]com. Version 0.6.6 contains a patch for the issue.
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Affected Vendors & Products
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History
Tue, 17 Jun 2025 20:45:00 +0000
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First Time appeared |
Openwebui
Openwebui open Webui |
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CPEs | cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:* | |
Vendors & Products |
Openwebui
Openwebui open Webui |
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cvssV3_1
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Mon, 05 May 2025 19:15:00 +0000
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ssvc
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Mon, 05 May 2025 19:00:00 +0000
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Description | Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.6.6, a vulnerability in the way certain html tags in chat messages are rendered allows attackers to inject JavaScript code into a chat transcript. The JavaScript code will be executed in the user's browser every time that chat transcript is opened, allowing attackers to retrieve the user's access token and gain full control over their account. Chat transcripts can be shared with other users in the same server, or with the whole open-webui community if "Enable Community Sharing" is enabled in the admin panel. If this exploit is used against an admin user, it is possible to achieve Remote Code Execution on the server where the open-webui backend is hosted. This can be done by creating a new function which contains malicious python code. This vulnerability also affects chat transcripts uploaded to `https://openwebui.com/c/<user>/<chat_id>`, allowing for wormable stored XSS in https[:]//openwebui[.]com. Version 0.6.6 contains a patch for the issue. | |
Title | Open WebUI vulnerable to stored XSS via unescaped markdown token in MarkdownTokens.svelte leading to full account takeover and RCE via functions | |
Weaknesses | CWE-79 | |
References |
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Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2025-05-05T18:50:56.928Z
Updated: 2025-05-05T19:03:53.594Z
Reserved: 2025-04-28T20:56:09.084Z
Link: CVE-2025-46719

Updated: 2025-05-05T19:03:13.793Z

Status : Analyzed
Published: 2025-05-05T19:15:57.197
Modified: 2025-06-17T20:18:16.003
Link: CVE-2025-46719

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