---
id: CVE-2026-68578
title: >-
  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
summary: >-
  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, s…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-306
published: '2026-08-02'
updated: '2026-08-02'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-68578'
references:
  - url: >-
      https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-6x73-v3rc-f57c
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/arcadedb-authentication-bypass-via-mcp-transport
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-08-02T13:18:30.006Z'
epss: 0.00363
epssPercentile: 0.2743
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.