CVE-2026-1132: Yonyou KSOA 9.0 SQL Injection Vulnerability

CVE-2026-1132 Overview

A SQL injection vulnerability has been identified in Yonyou KSOA 9.0. The vulnerability exists in the /kmf/edit_folder.jsp file within the HTTP GET Parameter Handler component. By manipulating the folderid parameter, an attacker can inject malicious SQL commands. This attack can be executed remotely without authentication, and exploit details have been publicly disclosed. The vendor was contacted regarding this vulnerability but did not respond.

Critical Impact
Remote attackers can exploit this SQL injection vulnerability to extract, modify, or delete database contents, potentially compromising sensitive business data and system integrity.

Affected Products

Yonyou KSOA 9.0

Discovery Timeline

2026-01-19 - CVE-2026-1132 published to NVD
2026-01-19 - Last updated in NVD database

Technical Details for CVE-2026-1132

Vulnerability Analysis

This vulnerability represents a classic SQL injection flaw (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component) affecting the Yonyou KSOA enterprise application platform. The vulnerable endpoint /kmf/edit_folder.jsp accepts user-supplied input through HTTP GET parameters without proper sanitization or parameterized queries.

The folderid parameter is directly concatenated into SQL queries, allowing attackers to escape the intended query context and execute arbitrary SQL commands against the underlying database. Since the vulnerability is network-accessible and requires no authentication or user interaction, remote attackers can directly target exposed KSOA installations.

Root Cause

The root cause of this vulnerability is improper input validation and lack of parameterized queries in the /kmf/edit_folder.jsp endpoint. The application fails to sanitize or escape user-supplied data in the folderid parameter before incorporating it into SQL statements. This classic injection pattern allows special characters and SQL syntax to be interpreted as code rather than data.

Attack Vector

The attack vector is network-based, requiring only HTTP access to the vulnerable endpoint. An attacker crafts a malicious GET request to /kmf/edit_folder.jsp with a specially crafted folderid parameter containing SQL injection payloads. Since no authentication is required, any network attacker who can reach the KSOA web interface can attempt exploitation.

Typical attack scenarios include:

Extracting sensitive data from database tables using UNION-based or error-based injection techniques
Modifying or deleting critical business records
Escalating privileges by manipulating user account data
Potentially achieving command execution on the database server depending on database configuration

For technical details and proof-of-concept information, refer to the GitHub Issue Report.

Detection Methods for CVE-2026-1132

Indicators of Compromise

Unusual HTTP GET requests to /kmf/edit_folder.jsp containing SQL keywords (SELECT, UNION, INSERT, DELETE, DROP) or special characters (single quotes, semicolons, comment sequences)
Database error messages appearing in web server logs or responses related to the edit_folder.jsp endpoint
Unexpected database queries or data access patterns in database audit logs
Increased failed or unusual login attempts following exploitation attempts

Detection Strategies

Deploy web application firewall (WAF) rules to detect and block SQL injection patterns in requests to KSOA endpoints
Monitor web server access logs for requests to /kmf/edit_folder.jsp with suspicious folderid parameter values
Implement database query logging and alerting for anomalous SQL execution patterns
Use intrusion detection systems (IDS) with signatures for common SQL injection attack patterns

Monitoring Recommendations

Enable detailed logging on web servers hosting Yonyou KSOA applications
Configure database audit logging to track queries executed against sensitive tables
Set up alerting for multiple failed SQL query attempts or database errors
Regularly review access logs for requests targeting the vulnerable JSP endpoint

How to Mitigate CVE-2026-1132

Immediate Actions Required

Restrict network access to the Yonyou KSOA application to trusted IP addresses only
Implement web application firewall rules to block SQL injection attempts against the /kmf/edit_folder.jsp endpoint
Review database permissions to ensure the application uses least-privilege accounts
Monitor for exploitation attempts while awaiting vendor guidance

Patch Information

No official patch is currently available from Yonyou. The vendor was contacted regarding this vulnerability but did not respond. Organizations should monitor for security updates from Yonyou and apply patches when they become available. Additional information can be found at the VulDB Entry #341722.

Workarounds

Block external access to the /kmf/edit_folder.jsp endpoint using network controls or reverse proxy rules
Implement input validation at the application layer to reject malicious characters in the folderid parameter
Use a web application firewall with SQL injection detection capabilities
Consider taking the affected functionality offline until a vendor patch is available
Implement database-level controls to limit the impact of successful injection attacks

bash

# Example: Apache mod_rewrite rule to block access to vulnerable endpoint
# Add to .htaccess or Apache configuration
RewriteEngine On
RewriteCond %{QUERY_STRING} folderid=.*['";\-\-] [NC,OR]
RewriteCond %{QUERY_STRING} folderid=.*(union|select|insert|delete|drop) [NC]
RewriteRule ^kmf/edit_folder\.jsp$ - [F,L]