CVE-2026-16498: critical vulnerability in HashiCorp Tooling
terraform-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode
Published
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 10epss 0.5%
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:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
Affected products
HashiCorp · ToolingRelated CVEs — HashiCorp Tooling
In the same product, most dangerous first.
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