CVE-2026-16496
terraform-mcp-server vulnerable to cross-user credential inheritance if an MCP session ID is obtained by another user
- State
- Published
- Severity
- 8.9 High
- Published
- Jul 28, 2026
- Updated
- Jul 28, 2026
- Reserved
- Jul 21, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.9 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L | HashiCorp |
Weaknesses
- CWE-384 Session Fixation
Affected Products
| Product | Versions |
|---|---|
ToolingHashiCorp |
|
References
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