jeecgboot JimuReport Data Source testConnection DriverManager.getConnection code injection

Successful exploitation of CVE-2026-5848 allows an attacker to inject and execute arbitrary code on the JimuReport server. This could lead to complete system compromise, including data exfiltration, modification, or deletion. The attacker could potentially gain control of the underlying database, access sensitive reports, and pivot to other systems on the network. Given the remote nature of the vulnerability and the availability of a public exploit, the blast radius is significant, potentially impacting all systems running vulnerable versions of JimuReport. The ability to inject code via a database connection parameter is a concerning pattern, similar to vulnerabilities that have previously allowed attackers to bypass authentication and gain privileged access.

Organizations utilizing JimuReport for reporting and analytics, particularly those with publicly accessible instances or those lacking robust input validation practices, are at significant risk. Shared hosting environments where multiple users share the same JimuReport instance are especially vulnerable, as a compromise of one user's account could potentially lead to a broader system compromise.

• java / server: Monitor JimuReport logs for suspicious connection attempts with unusual or malformed dbUrl values. Look for entries indicating connection failures or errors related to invalid database URLs. • generic web: Use curl or wget to test the /drag/onlDragDataSource/testConnection endpoint with various dbUrl parameters. Observe the server's response for any signs of code execution or error messages. • database (mysql, postgresql): If JimuReport connects to a MySQL or PostgreSQL database, monitor the database logs for unusual queries or connection attempts originating from the JimuReport server.

1. 2026-04-09Disclosure

   disclosure

2. 2026-04-09PoC

   poc

1. Reserviert2026-04-08
2. Veröffentlicht2026-04-09
3. EPSS aktualisiert2026-04-16

The primary mitigation for CVE-2026-5848 is to upgrade to the patched version of JimuReport as soon as it becomes available. Since a fixed version is not yet released, immediate workarounds are limited. Consider implementing strict input validation on the dbUrl parameter within the /drag/onlDragDataSource/testConnection file to prevent malicious input. Web application firewalls (WAFs) configured to detect and block code injection attempts targeting database connection parameters could provide an additional layer of defense. Monitor JimuReport logs for suspicious activity, particularly connection attempts with unusual or malformed dbUrl values. Review and restrict network access to the JimuReport server to minimize the potential attack surface.