CVE-2026-16498

criticalpriority · track · 0EPSS 0.005 · 39 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.46% (39th) EPSS

CVSS 10 · critical

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · osv

EPSS · scored 2026-10-28

The terraform-mcp-server before version 1.1.0 is vulnerable to a cross-tenant credential reuse issue in the streamable-HTTP stateless transport mode that may allow one user's Terraform token to be used to execute tool calls on behalf of subsequent users. This vulnerability, CVE-2026-16498, is fixed in terraform-mcp-server 1.1.0.

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.110criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Lsecondary · ENISA EU

v3.110criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Lsecondary · security@hashicorp.comexploitability 3.9 · impact 6

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-488US

affected products (4)

Products and version ranges known to be affected.

Hashicorp Terraform mcp-server <1.1.0all versionscert_bundDE
HashiCorp Terraform≤ mcp-server <1.1.0cert_bundDE
Hashicorp Tooling0.3.0 → 1.1.0enisa_euvdEU
Bitnami consul0.3.0 → 1.1.0osvUSpkg:bitnami/consul

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2572Hashicorp Terraform MCP Server: Mehrere SchwachstellenDeutsch2026-07-28csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Hashicorp Terraform MCP Server ausnutzen, um Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen und Daten zu manipulieren.
BIT-consul-2026-16498terraform-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode2026-08-17vendor · osvUS
The terraform-mcp-server before version 1.1.0 is vulnerable to a cross-tenant credential reuse issue in the streamable-HTTP stateless transport mode that may allow one user's Terraform token to be used to execute tool calls on behalf of subsequent users. This vulnerability, CVE-2026-16498, is fixed in terraform-mcp-server 1.1.0.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund osv NVD CVE.org MITRE

published 2026-07-28modified 2026-10-23

references (4)

External citations — patches, advisories, analysis.

scry

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