Back to overview

CVE-2026-16496

HIGH
8.9
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-16496
State
PUBLISHED
Assigner
HashiCorp
Reserved
2026-07-21 16:53 UTC
Published
2026-07-28 17:57 UTC
Last updated
2026-07-28 18:43 UTC
Primary CWE
CWE-384
CWE-384: Session Fixation
Vendor / Product
HashiCorp / Tooling
Sources
cve.org  ·  NVD

Severity & Metrics

8.9 HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
HashiCorp Tooling 64 bit,32 bit,x86,ARM,MacOS,Windows,Linux 0.3.0 < 1.1.0
Weakness (CWE)
CWESourceDescription
CWE-384 cna CWE-384: Session Fixation
CVSS scores (1)
ScoreSeverityVersionSourceVector
8.9 HIGH 3.1 cna CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L
References (1)
Back to overview