Description
Framelink Figma MCP Server before 0.6.3 allows an unauthenticated remote attacker to execute arbitrary operating system commands via a crafted HTTP POST request with shell metacharacters in input that is used by a fetchWithRetry curl command. The vulnerable endpoint fails to properly sanitize user-supplied input, enabling the attacker to inject malicious commands that are executed with the privileges of the MCP process. Exploitation requires network access to the MCP interface.
Problem types
CWE-420 Unprotected Alternate Channel
Product status
Any version before 0.6.3
References
github.com/...406c25504d9196f2/src/utils/fetch-with-retry.ts
www.imperva.com/...l-rce-discovered-in-a-popular-mcp-server/
github.com/GLips/Figma-Context-MCP/releases/tag/v0.6.3
