CVE-2025-66580: Openagentplatform Dive

Critical severity, CVSS 9.6. EPSS: 0.6% chance of exploitation in the next 30 days.

Dive is an open-source MCP Host Desktop Application that enables integration with function-calling LLMs. A critical Stored Cross-Site Scripting (XSS) vulnerability exists in versions prior to 0.11.1 in the Mermaid diagram rendering component. The application allows the execution of arbitrary JavaScript via `javascript:`. An attacker can exploit this to inject a malicious Model Context Protocol (MCP) server configuration, leading to Remote Code Execution (RCE) on the victim's machine when the node is clicked. Version 0.11.1 fixes the issue.

Affected products

• Openagentplatform Dive: before 0.11.1 (fixed in 0.11.1)

Published 2025-12-19. Last modified 2026-06-17.