CVE-2025-64496
CVSS v3
8
HIGH
EPSS Score
7.8 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2025-11-08
Frequently asked questions
What is CVE-2025-64496?
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.
Is CVE-2025-64496 actively exploited?
Active exploitation of CVE-2025-64496 has not been confirmed. Its EPSS score was 7.8% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2025-64496?
CVE-2025-64496 has a CVSS v3 base score of 8 (HIGH severity).
Is CVE-2025-64496 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
No credit card required · 500 free checks/month · Free API key
Other 2025 vulnerabilities worth triaging
Ranked by exploit probability (EPSS).
- CVE-2025-53770KEVMicrosoft SharePoint Server Remote Code Execution Vulnerability
- CVE-2025-49704KEVMicrosoft SharePoint Remote Code Execution Vulnerability
- CVE-2025-3248KEV
- CVE-2025-22457KEV
- CVE-2025-59287KEV
- CVE-2025-0282KEV
- CVE-2025-31161KEV
- CVE-2025-5777KEVNetScaler ADC and NetScaler Gateway - Insufficient input validation leading to memory overread