CVE-2026-103758: Obot-Platform Obot

High severity, CVSS 8.1. EPSS: 0.2% chance of exploitation in the next 30 days.

Obot 0.21.1 through 0.24.1 contains an authorization bypass vulnerability that allows authenticated users to reach MCP servers because the checkUI deny list omits the /mcp-connect-composite/ route. Basic-role users with a composite MCP ID can proxy requests through mcpGateway.Proxy to invoke tools on MCP servers restricted by Access Control Rules.

Affected products

• Obot-Platform Obot: from 0.21.1, up to and including 0.24.1

Published 2026-10-01. Last modified 2026-10-01.