Cybersecurity alerts are rising as new vulnerabilities get discovered regularly. One recent incident affects the OpenOLAT e-learning platform. Specifically, CVE-2026-28228 exposes servers to potential remote code execution (RCE). This vulnerability is critical for hosting providers, system administrators, and web server operators alike.
CVE-2026-28228 is a vulnerability in OpenOLAT that allows authenticated users with Author role to inject Velocity directives into email templates. Once processed, these directives are evaluated server-side. Attackers can use the #set directive with Java reflection to execute arbitrary commands on the host system. This could allow an attacker to gain control over the system with the privileges of the Tomcat process, a risk particularly heightened in containerized environments.
This vulnerability is a serious concern for anyone running an OpenOLAT server. It underscores the importance of implementing robust server security practices. If left unaddressed, the compromised system might face brute-force attacks, malware insertion, and other forms of exploitation. As a system administrator or hosting provider, recognizing and mitigating these risks is crucial.
To secure your servers against CVE-2026-28228, take these steps:
In light of vulnerabilities like CVE-2026-28228, it's vital to have proactive server security measures in place. We recommend trying BitNinja's platform to bolster your server protection. Our tools not only offer real-time malware detection but also shield against persistent brute-force attacks.




