← Vulnerability feed

Vulnerability record · CVE-2026-16496 · published 28 July 2026

CVE-2026-16496: The terraform-mcp-server before version 1.1.0 is vulnerable to an authorization bypass in the streamable-HTTP …

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.

8.9 CVSS 3.1 High EPSS 0.36% · top 73.3% CWE-384 · CWE-384 Deferred
8.9CVSS 3.1 base score
0.36%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
30 Jul 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L

References

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

Track CVE-2026-16496 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Source: NIST National Vulnerability Database (record CVE-2026-16496), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.