CVE-2026-16498 — terraform-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode

CVE-2026-16498

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

Description (CNA)

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 (CNA)

Vendor / product	Versions
HashiCorp / Tooling	affected 0.3.0 before 1.1.0

CWE

CWE-488

References

https://discuss.hashicorp.com/t/hcsec-2026-23-multiple-vulnerabilities-impacting-hashicorp-terraform-mcp-server/77606

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.