What is CVE-2026-16498?

CVE-2026-16498 is a critical-severity vulnerability in Hashicorp Tooling, classified under CWE-488. CVSS score: 10.0/10. Published 2026-07-28.

How severe is CVE-2026-16498?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Vulnerability in Hashicorp Tooling

CVE-2026-16498

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 su…

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L.

Affected products

Hashicorp Tooling — versions 0.3.0

Weakness classification (CWE)

CWE-488

References

security@hashicorp.com

Frequently asked questions

What is CVE-2026-16498?: CVE-2026-16498 is a critical-severity vulnerability in Hashicorp Tooling, classified under CWE-488. CVSS score: 10.0/10. Published 2026-07-28.
How severe is CVE-2026-16498?: Critical severity. CVSS v3 base score is 10.0 out of 10.