CVE-2026-16498

terraform-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode

Published Jul 28, 2026 CVSS 3.1 · 10 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Hashicorp
Hashicorp terraform-mcp-server
Vendors & Products Hashicorp
Hashicorp terraform-mcp-server
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title terraform-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode
Weaknesses CWE-488
References
Metrics cvssV3_1

{'score': 10, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
HashiCorp
Published
Updated
Jul 28, 2026, 6:39 PM
Reserved
Jul 21, 2026, 5:19 PM
Status
Deferred
Published
Jul 28, 2026, 7:17 PM
Modified
Oct 23, 2026, 11:10 PM