CVE-2026-55837: dbt-mcp OAuth helper exposes tokens without authentication
dbt-mcp
The local OAuth helper endpoint in dbt-mcp exposes full platform context and tokens without authentication or host validation. Remote attackers can exploit this via DNS rebinding to steal access and refresh tokens.
disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why
- CVSS
- 6.8
- EPSS
- <0.01 · top 81% · 2026-11-13
- fix status
- Fix status unknown
- first report
- 14 Sep 2026
- last update
- 14 Sep 2026
- CVE ids
Timeline · 1
Sources · 1
Advisories and databases
- 2026-09-14CVE-2026-55837: dbt-mcp is a Model Context Protocol server for interacting with dbt.NVD · nvd.nist.gov/vuln/detail/CVE-2026-55837
Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.
Classification
- lane
- Patch now
- AI role
- Attack on AI
- categories
- Infrastructure vulnerability
- severity
- 2 · Disclosed vulnerability
- fix status
- Fix status unknown
- targets
- Framework / tooling
- owasp llm top 10
- LLM03:2025 Supply Chain
- mitre atlas
- no technique for these categories
- dates
- happened 14 Sep 2026 · first reported 14 Sep 2026
- origin
- NVDVulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
- record
- confidence 0.95 · created 2026-10-18 06:33Z · updated 2026-10-18 06:33Z
Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned
Copy a brief
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the brief as text
# CVE-2026-55837: dbt-mcp OAuth helper exposes tokens without authentication https://gcdradar.vercel.app/incidents/cve-2026-55837-dbt-mcp-oauth-helper-exposes-tokens-without-a · AIR-2026-0109 · closed 2026-09-14 - Lane: Patch now - Severity: 2 (Disclosed vulnerability) - Fix status: Fix status unknown - First reported: 2026-09-14 - AI role: Attack on AI - Products: dbt-mcp - CVE ids: CVE-2026-55837 - CVSS: 6.8 ## Summary The local OAuth helper endpoint in dbt-mcp exposes full platform context and tokens without authentication or host validation. Remote attackers can exploit this via DNS rebinding to steal access and refresh tokens. ## What to do No action recorded; read the sources below and the vendor's advisory. ## Latest updates - 2026-09-14: CVE-2026-55837: dbt-mcp is a Model Context Protocol server for interacting with dbt. (https://nvd.nist.gov/vuln/detail/CVE-2026-55837) ## Sources - 2026-09-14 NVD: CVE-2026-55837: dbt-mcp is a Model Context Protocol server for interacting with dbt. https://nvd.nist.gov/vuln/detail/CVE-2026-55837 Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.
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