Vulnerabilities CVE-2026-16496

CVE-2026-16496

High

Open

TLP:CLEAR

terraform-mcp-server vulnerable to cross-user credential inheritance if an MCP session ID is obtained by another user

NVD CVE.org

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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.

Details

CVSS Score: 8.9
EPSS Score ⓘ: 0.27%

19.4th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L
Confidence: 90%
Published: Jul 28, 2026
Last Modified: Jul 28, 2026

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