Origin Validation Error Affecting dbt-mcp package, versions [,1.20.0)
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- published29 Jun 2026
- disclosed19 Jun 2026
- creditEQSTLab
Introduced: 19 Jun 2026
NewCVE-2026-55837 (opens in a new tab)How to fix?
Upgrade dbt-mcp to version 1.20.0 or higher.
Overview
dbt-mcp is an A MCP (Model Context Protocol) server for interacting with dbt resources.
Affected versions of this package are vulnerable to Origin Validation Error in the GET /dbt_platform_context endpoint, which is exposed without authentication or host-origin validation. An attacker can obtain sensitive OAuth tokens by sending unauthenticated HTTP requests to the local FastAPI server, either through DNS rebinding attacks or from a co-located process on the same host. This allows unauthorized access to the victim's dbt Cloud API and persistent access via the refresh token.