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Advisories

ArcadeDB before 26.7.3 Authentication Bypass via MCP Transport

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severity
high
date
Affecting

  • arcadedb >= 0, < 26.7.3

CWE
  • CWE-306 Missing Authentication for Critical Function
CVSS
7.7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
manus-use
Description
ArcadeDB versions before 26.7.3 fail to bind the authenticated principal in the MCP HTTP transport, causing all engine permission checks to silently pass as no-ops. Non-root MCP-allowed users can perform arbitrary database writes, DDL, schema mutations, and execute arbitrary JavaScript code via the query tool.

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