CVE-2026-6562 Overview
A SQL injection vulnerability has been identified in dameng100 muucmf version 1.9.5.20260309. The vulnerability exists in the getListByPage function within the file /index/Search/index.html. An attacker can exploit this flaw by manipulating the keyword argument, allowing for unauthorized SQL command execution against the backend database.
This vulnerability can be exploited remotely without authentication, making it a significant security concern for any deployment of the affected software. The vendor was contacted about this disclosure but did not respond.
Critical Impact
Remote attackers can exploit this SQL injection vulnerability to extract sensitive data, modify database contents, or potentially escalate privileges within the affected muucmf application.
Affected Products
- dameng100 muucmf version 1.9.5.20260309
Discovery Timeline
- 2026-04-19 - CVE CVE-2026-6562 published to NVD
- 2026-04-22 - Last updated in NVD database
Technical Details for CVE-2026-6562
Vulnerability Analysis
This SQL injection vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component) affects the search functionality of the muucmf content management framework. The getListByPage function fails to properly sanitize user-supplied input in the keyword parameter before incorporating it into SQL queries.
When users submit search requests through /index/Search/index.html, the application passes the keyword argument directly to database queries without adequate input validation or parameterized query implementation. This allows attackers to inject arbitrary SQL commands that execute with the same privileges as the application's database user.
The network-accessible nature of this vulnerability means that any internet-exposed instance of muucmf running the affected version is at risk. No authentication or user interaction is required to exploit this flaw, significantly lowering the barrier for potential attackers.
Root Cause
The root cause of this vulnerability is improper input validation and sanitization in the getListByPage function. The application fails to implement secure coding practices such as prepared statements or parameterized queries when handling user input in the keyword parameter. Instead, user-supplied data is directly concatenated into SQL query strings, enabling injection attacks.
Attack Vector
The attack is performed remotely via HTTP requests to the /index/Search/index.html endpoint. An attacker crafts a malicious request containing SQL injection payloads in the keyword parameter. The vulnerable function processes this input without sanitization, executing the injected SQL commands against the database.
A typical exploitation scenario involves an attacker sending specially crafted search queries that include SQL syntax designed to extract database information, bypass authentication mechanisms, or modify stored data. The exploit has been publicly documented, increasing the risk of widespread exploitation. Technical details are available in the GitHub SQL Injection Exploit writeup.
Detection Methods for CVE-2026-6562
Indicators of Compromise
- Unusual or malformed search queries in web server access logs containing SQL syntax characters such as single quotes, double dashes, or UNION statements
- Database error messages appearing in application logs indicating query syntax errors
- Unexpected data extraction or exfiltration patterns from the database server
- Anomalous database queries referencing system tables or information_schema
Detection Strategies
- Implement Web Application Firewall (WAF) rules to detect and block common SQL injection patterns in the keyword parameter
- Monitor HTTP request logs for suspicious payloads targeting /index/Search/index.html
- Deploy database activity monitoring to detect unusual query patterns or unauthorized data access
- Configure intrusion detection systems (IDS) with signatures for SQL injection attack vectors
Monitoring Recommendations
- Enable detailed logging for all requests to the search functionality endpoint
- Set up alerts for database queries containing suspicious keywords like UNION, SELECT, DROP, or information_schema
- Monitor for unusual traffic volumes or patterns to the affected endpoint
- Implement real-time log analysis to correlate potential attack indicators across web and database logs
How to Mitigate CVE-2026-6562
Immediate Actions Required
- Temporarily disable or restrict access to the /index/Search/index.html endpoint until a patch is available
- Implement WAF rules to filter SQL injection patterns in the keyword parameter
- Apply network-level access controls to limit exposure of the muucmf application
- Review database permissions and apply the principle of least privilege to the application's database user account
Patch Information
At the time of publication, no official patch has been released by the vendor. The vendor was contacted about this vulnerability but did not respond. Organizations should monitor the VulDB entry #358199 for updates on vendor response and potential patches.
Workarounds
- Deploy a Web Application Firewall configured to detect and block SQL injection attempts
- Implement input validation at the application level to sanitize the keyword parameter before processing
- Restrict access to the search functionality to authenticated users only
- Consider using a reverse proxy to filter and sanitize incoming requests to the vulnerable endpoint
- Isolate the database server and limit network access to only required application components
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
