Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. In versions 0.6.34 and below, the functionality that inserts custom prompts into the chat window is vulnerable to DOM XSS when 'Insert Prompt as Rich Text' is enabled, since the prompt body is assigned to the DOM sink .innerHtml without sanitisation. Any user with permissions to create prompts can abuse this to plant a payload that could be triggered by other users if they run the corresponding / command to insert the prompt.
This issue is fixed in version 0.6.35.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Openwebui Open_Webui
cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*
|
— |
0.6.35
|
References 3
https://github.com/open-webui/open-webui/blob/7a83e7dfa367d19f762ec17cac5e4a94e…
security-advisories@github.com
https://github.com/open-webui/open-webui/commit/eb9c4c0e358c274aea35f21c2856c0a…
security-advisories@github.com
https://github.com/open-webui/open-webui/security/advisories/GHSA-w7xj-8fx7-wfch
security-advisories@github.com