What’s Vulnerable › Vulnerabilities
CVE-2026-16498: terraform-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode
- Severity: critical (CVSS 10.0 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-28 · updated 2026-10-23
- Weakness: CWE-488
Description
The terraform-mcp-server before version 1.1.0 is vulnerable to a cross-tenant credential reuse issue in the streamable-HTTP stateless transport mode that may allow one user's Terraform token to be used to execute tool calls on behalf of subsequent users. This vulnerability, CVE-2026-16498, is fixed in terraform-mcp-server 1.1.0.
Affected products
- HashiCorp Tooling: from 0.3.0 before 1.1.0 — fixed in 1.1.0
How to fix
Upgrade to a fixed version: HashiCorp Tooling 1.1.0. Check the vendor advisory for mitigations.
References
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