OWASP MCP Top 10 and the MCP Server Security Standard

Takeaways

• The OWASP MCP Top 10 covers risks where MCP lets LLMs reach data sources and tools, often with no human in the loop: prompt injection, insufficient authentication, shadow MCP servers, context injection, secret exposure and tool poisoning.
• He walks a recent supply-chain compromise through those risks, from a package upgrade to command execution, exfiltration and token mismanagement.
• The MCP Server Security Standard (MSSS) has eight domains and compliance levels from essential to maximum assurance, and he suggests developers meet at least the six essential controls.
• Controls map to threats: secret redaction, OAuth delegation, least privilege and RBAC, URL validation against server-side request forgery, container hardening, audit logging and file system sandboxing.
• He frames this against PCI DSS, SOC 2, ISO 27001 and FedRAMP, and points to VetSec, OWASP Austin and other groups for getting involved.