In a nutshell: Unauthenticated attackers can exploit multiple vulnerabilities in the Terraform MCP Server to bypass access control mechanisms, disclose sensitive information, and manipulate data.
Hashicorp’s Terraform MCP Server contains multiple vulnerabilities that a remote attacker can exploit without authentication. Security controls, data confidentiality, and integrity are affected.
Multiple vulnerabilities have been identified in the Hashicorp Terraform MCP Server that can be exploited remotely and without requiring authentication. An attacker can thereby completely bypass implemented security controls.
The vulnerabilities enable unauthorized access to sensitive information as well as data manipulation within the system. This particularly affects environments where the MCP Server is used for orchestration and management of infrastructure code.
CISOs should inventory systems with Terraform MCP Server and check for available patches. Interim measures can include network isolation or access via VPN with additional authentication until an update is provided. Monitoring of network traffic to affected systems is urgently recommended.
Source: wid.cert-bund.de · Published July 29, 2026
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