CVE-2026-16496 (GCVE-0-2026-16496)

Vulnerability from cvelistv5 – Published: 2026-07-28 17:57 – Updated: 2026-07-28 18:43
VLAI
Title
terraform-mcp-server vulnerable to cross-user credential inheritance if an MCP session ID is obtained by another user
Summary
The terraform-mcp-server before version 1.1.0 is vulnerable to an authorization bypass in the streamable-HTTP stateful transport mode that may allow a user who obtains another user's MCP session ID to have their tool calls executed using that user's Terraform credentials. This vulnerability, CVE-2026-16496, is fixed in terraform-mcp-server 1.1.0.
Severity
8.9 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 18:42 UTC
CWE
Assigner
HashiCorp CNA under the mitre root
CNA scorecard C 70/100 over 46 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
HashiCorp Tooling Affected: 0.3.0 , < 1.1.0 (semver)
guessed Create a notification for this product.
Credits
This issue was reported to HashiCorp by Juan Pablo Martinez Kuhn of Coinspect.
Show details on NVD website
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