# CVE-2026-16498

## Summary

- **CVE ID:** CVE-2026-16498
- **Severity:** CRITICAL
- **CVSS Score:** 10 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L)
- **CWE:** CWE-488
- **Published:** Jul 28, 2026
- **Last Modified:** Jul 28, 2026

## 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 (0.3.0)

## References

- [CNA](https://discuss.hashicorp.com/t/hcsec-2026-23-multiple-vulnerabilities-impacting-hashicorp-terraform-mcp-server/77606)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.46%
- **EPSS Percentile:** 38.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._