CVE-2026-32140: Dataease JDBC Driver RCE Vulnerability

CVE-2026-32140 Overview

Dataease, an open source data visualization analysis tool, contains a critical vulnerability in its JDBC configuration handling that allows remote code execution. Prior to version 2.10.20, an attacker can manipulate the IniFile parameter to force the JDBC driver to load an attacker-controlled configuration file. This configuration file can inject dangerous JDBC properties, ultimately leading to arbitrary code execution on the server.

The vulnerability stems from the Redshift JDBC driver's getJdbcIniFile method, which implements an aggressive automatic configuration file discovery mechanism. When not explicitly restricted, the driver searches for a file named rsjdbc.ini. In a JDBC URL context, users can explicitly specify the configuration file via URL parameters, enabling arbitrary files on the server to be loaded as JDBC configuration files.

Critical Impact

This vulnerability allows unauthenticated remote attackers to achieve complete system compromise through arbitrary code execution by exploiting JDBC configuration file injection.

Affected Products

• Dataease versions prior to 2.10.20
• Systems utilizing the Redshift JDBC driver with Dataease
• Deployments with network-accessible Dataease instances

Discovery Timeline

• March 12, 2026 - CVE-2026-32140 published to NVD
• March 12, 2026 - Last updated in NVD database

Technical Details for CVE-2026-32140

Vulnerability Analysis

This vulnerability is classified as a Path Traversal issue (CWE-22) that enables Remote Code Execution. The flaw exists in how Dataease handles JDBC driver configuration parameters, specifically the IniFile parameter supported by the Redshift JDBC driver.

The attack exploits the driver's configuration file loading mechanism. When a JDBC connection is established, the getJdbcIniFile method processes configuration parameters without adequate validation. An attacker who can control the IniFile parameter in a JDBC URL can redirect the driver to load a malicious configuration file from an arbitrary location on the filesystem.

Once the attacker-controlled configuration file is loaded, it can inject dangerous JDBC properties that result in code execution. This attack chain leverages the implicit trust the JDBC driver places in configuration file contents.

Root Cause

The root cause is insufficient input validation and path sanitization in the JDBC configuration file loading mechanism. The getJdbcIniFile method in the Redshift JDBC driver execution flow allows user-supplied parameters to directly influence which configuration file is loaded. The automatic configuration file discovery mechanism, which searches for rsjdbc.ini when not explicitly restricted, compounds this issue by providing a predictable attack surface.

The lack of proper file path validation enables path traversal attacks, allowing attackers to break out of intended directories and load configuration files from arbitrary filesystem locations.

Attack Vector

The attack is network-based and requires no authentication or user interaction. An attacker can craft a malicious JDBC URL containing a manipulated IniFile parameter that points to either:

1. An existing file on the server that can be interpreted as a JDBC configuration file
2. A file that the attacker has previously uploaded or created through other means

The malicious configuration file can contain JDBC properties that trigger code execution when processed by the driver. This could include properties that invoke external commands, load malicious classes, or otherwise compromise the system.

The network accessibility of Dataease instances combined with the lack of authentication requirements makes this vulnerability particularly dangerous for internet-facing deployments.

Detection Methods for CVE-2026-32140

Indicators of Compromise

• Unusual JDBC connection strings containing IniFile parameters with path traversal sequences (e.g., ../, ..\\)
• Unexpected reads of rsjdbc.ini files from non-standard directories
• JDBC driver loading configuration files from user-writable or temporary directories
• Anomalous process spawning from Dataease or Java processes

Detection Strategies

• Monitor JDBC connection logs for suspicious IniFile parameter values containing directory traversal patterns
• Implement file integrity monitoring on directories where JDBC configuration files should reside
• Deploy web application firewall rules to detect path traversal sequences in JDBC-related parameters
• Use application-level logging to track all JDBC connection string parameters

Monitoring Recommendations

• Enable verbose logging for Dataease JDBC connections to capture full connection string details
• Set up alerts for any file access attempts outside of expected configuration directories
• Monitor for unexpected network connections or command execution originating from the Dataease process
• Implement real-time analysis of Dataease logs for exploitation indicators

How to Mitigate CVE-2026-32140

Immediate Actions Required

• Upgrade Dataease to version 2.10.20 or later immediately
• If immediate patching is not possible, restrict network access to Dataease instances
• Review access logs for any indicators of prior exploitation attempts
• Implement additional input validation at the network perimeter for JDBC-related traffic

Patch Information

The vulnerability has been fixed in Dataease version 2.10.20. The patch addresses the JDBC configuration file injection vulnerability by implementing proper validation and sanitization of the IniFile parameter. Organizations should upgrade to this version or later to remediate the vulnerability.

For detailed patch information, refer to the GitHub Security Advisory.

Workarounds

• Isolate Dataease instances from untrusted networks using firewall rules or network segmentation
• Implement application-level allowlists for permitted JDBC configuration file paths
• Deploy a reverse proxy with input validation to filter malicious JDBC URL parameters
• Remove write permissions for service accounts to directories where configuration files could be loaded

# Example: Restrict network access to Dataease instance
# Allow only trusted internal networks
iptables -A INPUT -p tcp --dport 8080 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 8080 -j DROP

# Set restrictive file permissions on JDBC configuration directories
chmod 755 /opt/dataease/conf/
chown root:root /opt/dataease/conf/