Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Versions 0.6.224 and prior contain a code injection vulnerability in the Direct Connections feature that allows malicious external model servers to execute arbitrary JavaScript in victim browsers via Server-Sent Event (SSE) execute events. This leads to authentication token theft, complete account takeover, and when chained with the Functions API, enables remote code execution on the backend server. The attack requires the victim to enable Direct Connections (disabled by default) and add the attacker's malicious model URL, achievable through social engineering of the admin and subsequent users. This issue is fixed in version 0.6.35.
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Sat, 08 Nov 2025 01:45:00 +0000
| Type | Values Removed | Values Added |
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| Description | Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Versions 0.6.224 and prior contain a code injection vulnerability in the Direct Connections feature that allows malicious external model servers to execute arbitrary JavaScript in victim browsers via Server-Sent Event (SSE) execute events. This leads to authentication token theft, complete account takeover, and when chained with the Functions API, enables remote code execution on the backend server. The attack requires the victim to enable Direct Connections (disabled by default) and add the attacker's malicious model URL, achievable through social engineering of the admin and subsequent users. This issue is fixed in version 0.6.35. | |
| Title | Open WebUI Affected by an External Model Server (Direct Connections) Code Injection via SSE Events | |
| Weaknesses | CWE-501 CWE-829 CWE-830 CWE-95 |
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cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2025-11-08T01:29:02.654Z
Updated: 2025-11-08T01:29:02.654Z
Reserved: 2025-11-05T19:12:25.103Z
Link: CVE-2025-64496
No data.
Status : Received
Published: 2025-11-08T02:15:35.443
Modified: 2025-11-08T02:15:35.443
Link: CVE-2025-64496
No data.