CVE-2026-4954: mingSoft MCMS SQL Injection Vulnerability

CVE-2026-4954 Overview

A SQL injection vulnerability has been identified in mingSoft MCMS up to version 5.5.0. The vulnerability exists in the list function within the file net/mingsoft/cms/action/web/ContentAction.java, which is part of the Web Content List Endpoint component. This flaw allows attackers to manipulate input parameters to inject malicious SQL queries, potentially compromising the underlying database.

Critical Impact

Remote attackers with low privileges can exploit this SQL injection vulnerability to extract sensitive data, modify database contents, or potentially escalate their access within the affected MCMS installation.

Affected Products

• mingSoft MCMS versions up to and including 5.5.0
• Web Content List Endpoint (ContentAction.java)

Discovery Timeline

• 2026-03-27 - CVE-2026-4954 published to NVD
• 2026-03-30 - Last updated in NVD database

Technical Details for CVE-2026-4954

Vulnerability Analysis

This vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), commonly manifesting as injection attacks. The SQL injection flaw resides in the list function of the ContentAction.java file, which handles web content listing operations within the MCMS application.

The vulnerability can be exploited remotely over the network without user interaction, though it requires low-level authentication privileges. Successful exploitation could result in partial impacts to confidentiality, integrity, and availability of the system. The exploit has been publicly disclosed, increasing the risk of active exploitation attempts.

Root Cause

The root cause of this vulnerability is improper input validation and sanitization in the Web Content List Endpoint. The list function in ContentAction.java fails to properly sanitize user-supplied input before incorporating it into SQL queries. This allows specially crafted input to break out of the intended query structure and inject arbitrary SQL commands.

Attack Vector

The attack can be initiated remotely over the network by an authenticated attacker with low privileges. The attacker can manipulate parameters sent to the Web Content List Endpoint to inject malicious SQL statements. The injected SQL code is then executed by the database server with the same privileges as the application's database connection.

The vulnerability mechanism involves improper handling of input parameters in the content listing functionality. When user-controlled data reaches the list function without adequate sanitization, it becomes possible to append or modify SQL statements. For detailed technical analysis of the exploitation technique, refer to the GitHub Issue Discussion and VulDB advisory.

Detection Methods for CVE-2026-4954

Indicators of Compromise

• Unusual or malformed HTTP requests targeting the MCMS content listing endpoint
• Database query logs showing unexpected SQL syntax or UNION/SELECT statements in content parameters
• Error messages revealing SQL syntax errors in application logs
• Unexpected database access patterns or data exfiltration attempts

Detection Strategies

• Implement web application firewall (WAF) rules to detect SQL injection patterns in requests to the content listing endpoint
• Monitor application logs for SQL error messages or exceptions from the ContentAction.java component
• Deploy database activity monitoring to identify anomalous query patterns
• Use SentinelOne Singularity to detect exploitation attempts and post-exploitation behaviors

Monitoring Recommendations

• Enable detailed logging for the MCMS application, particularly for the Web Content List Endpoint
• Configure alerting for SQL injection signature patterns in network traffic
• Review database audit logs for unauthorized data access or modification attempts
• Monitor for reconnaissance activity targeting MCMS installations

How to Mitigate CVE-2026-4954

Immediate Actions Required

• Upgrade mingSoft MCMS to a patched version when available from the vendor
• Implement input validation and parameterized queries at the application level
• Deploy web application firewall rules to block SQL injection attempts
• Review and restrict database permissions for the MCMS application user
• Consider temporarily disabling or restricting access to the affected endpoint until a patch is applied

Patch Information

At the time of publication, organizations should monitor the mingSoft MCMS vendor channels for official security patches addressing this vulnerability. Review the VulDB advisory and GitHub Issue Discussion for updates on remediation guidance.

Workarounds

• Implement strict input validation on all parameters passed to the content listing endpoint
• Use prepared statements or parameterized queries if modifying application code is feasible
• Restrict network access to the MCMS administration and content endpoints using firewall rules
• Deploy a reverse proxy or WAF with SQL injection detection capabilities in front of the MCMS application

# Example WAF rule configuration for ModSecurity
# Block common SQL injection patterns targeting content endpoints
SecRule REQUEST_URI "@contains /cms/content" \
    "id:100001,phase:2,deny,status:403,\
    chain"
SecRule ARGS "@detectSQLi" \
    "log,msg:'SQL Injection attempt blocked on MCMS content endpoint'"