CVE-2025-13811 identifies a SQL injection vulnerability in the jsnjfz WebStack-Guns 1.0 web application framework. The vulnerability is located in the source code file src/main/java/com/jsnjfz/manage/core/common/constant/factory/PageFactory.java, where the 'sort' parameter is improperly sanitized before being incorporated into SQL queries. This lack of input validation enables an attacker to inject malicious SQL code remotely, without requiring authentication or user interaction. The vulnerability affects the confidentiality, integrity, and availability of the backend database by potentially allowing unauthorized data access, data manipulation, or denial of service through crafted SQL statements. The vendor was notified early but has not provided a patch or mitigation guidance, and while no public exploits are currently known, the vulnerability has been publicly disclosed, increasing the risk of exploitation. The CVSS 4.0 base score is 5.3 (medium), reflecting the remote attack vector, low complexity, and no privileges or user interaction needed, but limited scope and impact. The vulnerability is critical for any deployment of WebStack-Guns 1.0 that relies on the vulnerable code path for sorting database queries, especially in environments where sensitive data is stored or processed.

For European organizations using jsnjfz WebStack-Guns 1.0, this vulnerability poses significant risks. Exploitation could lead to unauthorized disclosure of sensitive data, including personal, financial, or operational information, violating GDPR and other data protection regulations. Integrity of data could be compromised, enabling attackers to alter records or inject malicious data, potentially disrupting business processes or corrupting datasets. Availability may also be affected if attackers leverage SQL injection to cause database crashes or lockouts, impacting service continuity. Organizations in sectors such as finance, healthcare, government, and critical infrastructure are particularly vulnerable due to the sensitivity and regulatory requirements of their data. The lack of vendor response and patch availability increases the window of exposure, necessitating proactive defensive measures. Additionally, reputational damage and legal consequences could arise from breaches exploiting this vulnerability.

To mitigate CVE-2025-13811, organizations should immediately audit all uses of the 'sort' parameter in WebStack-Guns 1.0 and implement strict input validation and sanitization to prevent SQL injection. Employ parameterized queries or prepared statements wherever database queries are constructed. Deploy Web Application Firewalls (WAFs) with updated rules to detect and block SQL injection attempts targeting the 'sort' parameter. Conduct thorough code reviews and penetration testing focused on injection vectors. Network segmentation should be used to isolate vulnerable systems and limit attacker lateral movement. Monitor logs for suspicious query patterns or anomalies related to sorting operations. If possible, upgrade or migrate away from the vulnerable version, or apply custom patches to sanitize inputs. Maintain an incident response plan to quickly address any exploitation attempts. Finally, engage with the vendor or community for updates or patches and share threat intelligence to improve collective defense.