CVE-2026-16496
High
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.
SeverityHigh
CVSS8.9
Exploit probability—
ProductTooling
PublishedJul 28, 2026
First seenJul 28, 2026
Weakness typeCWE-384CWE-384
How to fix
Update
- HashiCorp Tooling1.1.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| HashiCorp Tooling | 0.3.0 ≤ v < 1.1.0 | 1.1.0 |
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