CVE-2026-67341 in ArcadeDB
Summary
by MITRE • 08/01/2026
ArcadeDB versions before 26.7.2 fail to enforce scripting authorization checks on the SQL DEFINE FUNCTION statement with LANGUAGE js. Attackers with database access can execute arbitrary JavaScript code by submitting DEFINE FUNCTION statements, bypassing security controls intended to restrict scripting to administrators.
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Analysis
by VulDB Data Team • 08/01/2026
This vulnerability exists in ArcadeDB versions prior to 26.7.2 where the system fails to properly validate scripting authorization when processing SQL DEFINE FUNCTION statements using the javascript language. The flaw represents a critical authorization bypass that allows authenticated database users to execute arbitrary JavaScript code within the database environment. The vulnerability stems from inadequate input validation and privilege enforcement mechanisms that should have restricted the execution of user-defined functions to administrative-level accounts only.
The technical implementation of this vulnerability occurs when an attacker submits a SQL DEFINE FUNCTION statement with LANGUAGE js parameter. Normally such operations should require elevated privileges or explicit authorization from database administrators, but due to the missing authorization checks, any authenticated user can create and execute JavaScript functions directly within the database engine. This creates a path for privilege escalation where ordinary users can gain code execution capabilities that should be restricted to privileged accounts. The vulnerability specifically affects the database's scripting engine and demonstrates poor access control implementation.
The operational impact of this vulnerability is severe as it enables attackers to perform arbitrary code execution on the database server itself. Once executed, malicious JavaScript functions can access database resources, read or modify data, extract sensitive information, or even establish persistence mechanisms within the database environment. This represents a significant risk to data confidentiality and integrity since attackers can manipulate database contents through the executed scripts. The vulnerability essentially allows for complete compromise of database functionality from within the database layer itself.
Security controls that were designed to prevent unauthorized script execution have been bypassed entirely, creating a dangerous situation where standard database access controls fail to provide adequate protection. Organizations using affected ArcadeDB versions face potential data breaches, unauthorized access to sensitive information, and possible system compromise through this code execution vulnerability. The lack of proper authorization enforcement in the scripting subsystem violates fundamental security principles and creates an attack surface that should be restricted to administrators only.
The vulnerability aligns with CWE-862 which describes inadequate authorization controls, and represents a specific instance of insufficient access control mechanisms within database systems. From an ATT&CK perspective, this maps to privilege escalation techniques where attackers leverage application-level vulnerabilities to execute code with elevated privileges. The issue demonstrates the importance of implementing proper input validation and access control checks within database engines, particularly for scripting and function definition operations that can directly impact system security.
Mitigation strategies should focus on immediate patching to ArcadeDB version 26.7.2 or later where proper authorization checks have been implemented. Organizations should also review and restrict database user permissions, implement additional monitoring for DEFINE FUNCTION statements, and consider network-level restrictions to limit access to database scripting capabilities. Database administrators should also audit existing functions and scripts to identify any malicious code that may have been introduced through this vulnerability during the affected time period.