CVE-2026-67357
Received Received - Intake

Information Disclosure in ArcadeDB via MCP Server Settings

Publication date: 2026-08-02

Last updated on: 2026-08-02

Assigner: VulnCheck

Description
ArcadeDB versions before 26.7.3 contain an information disclosure vulnerability in the MCP get_server_settings tool that leaks the arcadedb.ha.clusterToken in cleartext. Attackers with MCP access can retrieve the cluster token and use it with X-ArcadeDB-Cluster-Token and X-ArcadeDB-Forwarded-User headers to impersonate root and achieve full server compromise.

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Meta Information

Published
2026-08-02
Last Modified
2026-08-02
Generated
2026-08-02
AI Q&A
2026-08-02
EPSS Evaluated
N/A
NVD
CVE-2026-67357
EUVD
EUVD-2026-51987

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
arcadedb arcadedb to 26.7.3 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-200 The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

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Executive Summary

ArcadeDB versions before 26.7.3 have an information disclosure vulnerability in the MCP get_server_settings tool. This flaw leaks the arcadedb.ha.clusterToken in plaintext. Attackers with MCP access can retrieve this token and use it with specific headers to impersonate root and fully compromise the server.

Detection Guidance

Check MCP logs or network traffic for requests to the get_server_settings tool. Look for responses containing the arcadedb.ha.clusterToken in cleartext. Monitor for unusual use of X-ArcadeDB-Cluster-Token and X-ArcadeDB-Forwarded-User headers.

Impact Analysis

An attacker could gain full control of the ArcadeDB server by exploiting this vulnerability. This could lead to unauthorized data access, modification, or deletion, and potential lateral movement within the network if the server is part of a larger system.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating GDPR's data protection principles and HIPAA's security requirements. Organizations may face fines, legal actions, and reputational damage due to non-compliance.

Mitigation Strategies

Upgrade ArcadeDB to version 26.7.3 or later. Restrict MCP access to trusted users only. Review and rotate the cluster token if exposed. Disable unnecessary headers or enforce strict validation.

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