CVE-2026-1124 identifies a SQL injection vulnerability in Yonyou KSOA version 9.0, specifically within the /worksheet/work_report.jsp file's HTTP GET parameter handler for the 'ID' argument. The vulnerability arises from insufficient input sanitization, allowing attackers to inject malicious SQL queries remotely without authentication or user interaction. Exploiting this flaw can lead to unauthorized data access, modification, or deletion, compromising the confidentiality, integrity, and availability of the backend database. The vulnerability has a CVSS 4.0 base score of 6.9, reflecting medium severity due to its network attack vector, lack of required privileges, and no user interaction, but limited scope and impact. The vendor was notified but has not responded or released a patch, and public exploit code is available, increasing the risk of exploitation. This vulnerability affects organizations using Yonyou KSOA 9.0, a business management software suite widely used in enterprise environments, particularly in Asia and increasingly in Europe. The lack of patch availability necessitates immediate defensive measures to mitigate potential attacks. Attackers exploiting this vulnerability could extract sensitive business data, disrupt operations, or pivot within compromised networks. The vulnerability's presence in a web-accessible component makes it a prime target for automated scanning and exploitation attempts.

For European organizations, exploitation of CVE-2026-1124 could lead to significant data breaches involving sensitive business information, intellectual property, or customer data stored within Yonyou KSOA systems. The SQL injection could allow attackers to bypass authentication, manipulate or delete critical data, and potentially disrupt business operations, leading to financial losses and reputational damage. Given the software's role in enterprise resource planning and workflow management, availability impacts could stall critical business processes. The public availability of exploit code increases the likelihood of attacks, especially against organizations that have not implemented adequate mitigations. Regulatory implications under GDPR are also a concern if personal data is compromised, potentially resulting in fines and legal consequences. The medium severity rating indicates a substantial but not catastrophic risk, emphasizing the need for timely response to prevent escalation. Organizations relying heavily on Yonyou KSOA for operational continuity are particularly vulnerable, and the absence of vendor patches heightens exposure.

1. Implement strict input validation and parameterized queries or prepared statements in the affected application components to prevent SQL injection. 2. Deploy a Web Application Firewall (WAF) with custom rules to detect and block malicious SQL injection payloads targeting the /worksheet/work_report.jsp endpoint and the 'ID' parameter. 3. Restrict network access to the Yonyou KSOA web interface to trusted IP ranges and internal networks where possible, reducing exposure to external attackers. 4. Conduct thorough code reviews and security testing of the affected application modules to identify and remediate similar injection points. 5. Monitor application logs and network traffic for unusual queries or access patterns indicative of exploitation attempts. 6. Maintain up-to-date backups of critical data to enable recovery in case of data corruption or deletion. 7. Engage with Yonyou support channels and security advisories to obtain patches or official guidance as soon as they become available. 8. Consider temporary isolation or segmentation of systems running vulnerable versions until mitigations are fully implemented. 9. Educate IT and security teams about the vulnerability and exploitation techniques to enhance detection and response capabilities.