CVE-2026-67208 in Juggle
Summary
by MITRE • 07/30/2026
Juggle through 1.6.0 contains a remote code execution vulnerability that allows unauthenticated remote attackers to execute arbitrary OS commands by connecting to the exposed H2 database web console using default shipped credentials. Attackers can access the unprotected /h2-console endpoint, authenticate with default credentials, and leverage the H2 CREATE ALIAS Runtime.exec() technique to execute arbitrary commands, resulting in root-level code execution when running the stock Docker image.
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Analysis
by VulDB Data Team • 07/31/2026
The Juggle application version 1.6.0 presents a critical remote code execution vulnerability that stems from improper security configuration and weak authentication mechanisms within its embedded H2 database web console. This vulnerability exists due to the application shipping with default credentials that remain unchanged in production environments, creating an easily exploitable attack vector for unauthenticated remote adversaries. The flaw specifically resides in the H2 database console endpoint which is exposed without proper access controls or authentication barriers, allowing attackers to directly connect and leverage pre-existing administrative privileges.
The technical exploitation of this vulnerability follows a well-documented pattern that leverages the H2 database's CREATE ALIAS functionality combined with Runtime.exec() capabilities. Attackers first gain access to the unprotected /h2-console endpoint through default credentials such as admin/admin or sa/ and subsequently execute malicious commands through the database console interface. This technique directly maps to CWE-78 and CWE-94, representing poor input validation and improper neutralization of special elements used in command execution contexts. The vulnerability chain begins with the exposed web interface, continues through default credential usage, and concludes with command injection through database alias creation.
The operational impact of this vulnerability extends beyond simple code execution to full system compromise when the application runs within stock Docker containers. When Juggle operates in its default configuration, particularly within containerized environments, the root-level privileges available to the Docker process translate directly into complete system control for attackers. This represents a severe escalation from standard user-level access to privileged system manipulation, allowing adversaries to modify files, establish persistence mechanisms, and potentially exfiltrate sensitive data. The vulnerability affects any deployment where default credentials are not changed and where the H2 console remains exposed to network traffic.
Security mitigations for this vulnerability require immediate implementation of multiple defensive controls to prevent exploitation. Organizations must first disable or remove the H2 database web console from production deployments entirely, as it represents an unnecessary attack surface when not required for legitimate administrative purposes. Default credentials must be changed immediately upon installation, with strong password policies enforced across all application components. Network segmentation should be implemented to restrict access to the H2 console endpoint to trusted administrative networks only. Additionally, implementing proper authentication controls and monitoring for unauthorized console access attempts will help detect potential exploitation attempts. The vulnerability aligns with ATT&CK technique T1059.007 for command and scripting interpreter and T1046 for network service discovery, indicating that defenders should monitor for these specific attack patterns in their network traffic analysis. Proper patching of the application to newer versions that address this configuration issue represents the most effective long-term solution to prevent exploitation while maintaining application functionality.