What’s Vulnerable › Vulnerabilities

CVE-2026-100406: dbt: Unauthenticated Arbitrary SQL Execution in `dbt docs serve`

• Severity: high (CVSS 8.2 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-14 · updated 2026-10-20
• Weakness: CWE-22

Description

dbt enables data analysts and engineers to transform their data using the same practices that software engineers use to build applications. From 2.0.0-alpha.0 until 2.0.0-alpha.5, dbt docs serve exposes the unauthenticated POST /api/v1/query endpoint in crates/dbt-docs-server/src/handlers/query.rs, which passes caller-supplied SQL to DuckDbViewsBackend::query_arrow() in crates/dbt-index-core/src/backend.rs without authorization or an allowlist. A client that can reach the server can invoke DuckDB filesystem-reading functions to read files available to the dbt process, including files outside the docs index directory. The server binds to localhost by default, but operators can expose it to a network through the host option or DBT_DOCS_HOST setting. This issue is fixed in version 2.0.0-alpha.5.

Affected products

• dbt-labs dbt-core: from 2.0.0-alpha.0, < 2.0.0-alpha.5

References

• https://github.com/dbt-labs/dbt/commit/3a5d26fe02b58382720d04cbd87143b7b6775413
• https://github.com/dbt-labs/dbt/releases/tag/v2.0.0-alpha.5
• https://github.com/dbt-labs/dbt/security/advisories/GHSA-h2j2-2r7g-rff8
• https://github.com/dbt-labs/dbt/security/advisories/GHSA-h2j2-2r7g-rff8

Get alerted when CVE-2026-100406 or the next vulnerability affects your stack