CVE-2026-16496

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Source
https://cve.org/CVERecord?id=CVE-2026-16496
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-16496.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-16496
Aliases
Published
2026-07-28T17:57:36.795Z
Modified
2026-08-17T08:11:07.530389271Z
Severity
  • 8.9 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L CVSS Calculator
Summary
terraform-mcp-server vulnerable to cross-user credential inheritance if an MCP session ID is obtained by another user
Details

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.

Database specific 
{
    "cna_assigner": "HashiCorp",
    "cwe_ids": [
        "CWE-384"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/16xxx/CVE-2026-16496.json"
}
References

Affected packages

Git / github.com/hashicorp/terraform-mcp-server

Affected ranges

Type
GIT
Repo
https://github.com/hashicorp/terraform-mcp-server
Events
Introduced
22ae2e9368890031a68816c9fb1db91afaeb078c
Fixed
0a0dee37613f40a58c1a16392ee90baa117fdfcd
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0.3.0"
        },
        {
            "fixed": "1.1.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-16496.json"