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CVE PROGRAM SOURCE RECORD8.9 High

CVE-2026-16496

terraform-mcp-server vulnerable to cross-user credential inheritance if an MCP session ID is obtained by another user

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Status
Published
Published
Updated
Assigning organization
HashiCorp

Description

The terraform-mcp-server before version 1.1.0 is vulnerable to an authorization bypass in the streamable-HTTP stateful transport mode that may allow a user who obtains another user's MCP session ID to have their tool calls executed using that user's Terraform credentials. This vulnerability, CVE-2026-16496, is fixed in terraform-mcp-server 1.1.0.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

HashiCorp Tooling

Default version status: unaffected

  • 0.3.0 to < 1.1.0affected

References