CVE-2026-55837: fallo de gravedad media en dbt-labs dbt-mcp
dbt-mcp: Unauthenticated OAuth Context Endpoint Leaks dbt Platform Tokens
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 6.8epss 0.3%
dbt-mcp is a Model Context Protocol server for interacting with dbt. Prior to 1.20.0, the local OAuth helper in src/dbt_mcp/oauth/fastapi_app.py exposes GET /dbt_platform_context without authentication or Host validation after a user completes the dbt Platform OAuth flow. The endpoint returns the full DbtPlatformContext, including access_token and refresh_token values persisted by the context manager, to any process that can reach 127.0.0.1:6785. The absence of TrustedHostMiddleware allows a remote attacker to use DNS rebinding against a victim's browser because the helper accepts arbitrary Host headers, while a co-located process can request the endpoint directly. The stolen tokens provide immediate dbt Platform API access as the victim and persistent access through the refresh token, allowing access to or modification of projects, jobs, environment secrets, and related account data. This issue is fixed in version 1.20.0.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Productos afectados
dbt-labs · dbt-mcpCVEs relacionadas — dbt-labs dbt-mcp
En el mismo producto, de las más peligrosas a las menos.
CVE-2026-44970LOWdbt-mcp: All MCP Tool Arguments Including Raw SQL and --vars Credentials Transmitted to dbt Labs Telemetry by Default Without RedactionEPSS 0.4%CVE-2026-44968MEDIUMdbt-mcp: Argument Injection in dbt CLI Tool Wrappers via node_selection and resource_type ParametersEPSS 0.2%CVE-2026-44969LOWdbt-mcp: Tool Arguments Including SQL Queries and Credentials Logged in Plaintext Without Redaction When File Logging Is EnabledEPSS 0.2%