CVE-2024-31026 in Open eClass
Summary
by MITRE • 09/29/2026
An issue in Greek Universities Network (GUnet) Open eClass Platform v.3.15 allows a remote attacker to execute arbitrary code via the chat input field in the course module.
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Analysis
by VulDB Data Team • 09/29/2026
The vulnerability identified within the GUnet Open eClass platform version 3.15 represents a critical security flaw located specifically within the chat functionality of the course management system. This environment is widely utilized by academic institutions for facilitating remote learning, student-teacher communication, and collaborative coursework. The specific point of failure resides in how the application processes user input submitted through the chat interface associated with individual courses. When an authenticated user interacts with this module to send a message, the platform fails to adequately sanitize or validate the data before processing it on the server side. This lack of rigorous input validation creates a pathway for malicious actors who have valid credentials within the system to inject executable code directly into the application logic.
From a technical perspective, this flaw is characteristic of an Injection vulnerability, specifically aligning with Common Weakness Enumeration identifier CWE-79 which covers Improper Neutralization of Input During Web Page Generation commonly known as Cross-Site Scripting or potentially Server-Side Request Forgery depending on the exact implementation details not fully disclosed in the brief description. However given the severity described as arbitrary code execution it suggests a more severe category such as CWE-94 improper control of generation of code which typically indicates server-side injection rather than client side scripting alone. The attacker leverages this weakness by crafting a specially formatted message payload that bypasses existing filtering mechanisms and is subsequently interpreted not merely as text but as executable commands or scripts by the underlying web application framework or associated backend services.
The operational impact of this vulnerability is severe because it compromises the integrity and confidentiality of the entire learning management system. An attacker who successfully exploits this flaw can achieve arbitrary code execution on the server hosting the Open eClass instance. This level of access allows for complete compromise of the host operating system, enabling the extraction sensitive data including student records personal identifiable information grades and administrative credentials stored in the associated database it also permits lateral movement within the institutional network if the web server is not properly isolated from other critical infrastructure services furthermore persistent backdoors can be installed ensuring continued unauthorized access even after initial detection attempts.
This type of exploitation aligns with several tactics defined in the MITRE ATT&CK framework particularly those related to Initial Access and Execution phases where adversaries use valid credentials to gain foothold and then execute malicious commands within the environment it highlights a significant risk for educational institutions that rely on this platform as their primary digital classroom infrastructure. The presence of such a vulnerability undermines trust among students faculty members and administrative staff while exposing the institution to potential regulatory penalties under data protection laws due to unauthorized access to personal information.
Mitigation strategies must focus immediately on patching the affected version 3.15 with any available updates released by GUnet or the Open eClass development community that address input sanitization protocols within the chat module administrators should also implement strict web application firewall rules that detect and block anomalous patterns in HTTP requests targeting the chat endpoints until patches are applied additionally enforcing principle of least privilege for database accounts used by the web application can limit the damage if exploitation occurs it is crucial to review access logs for signs of attempted injection attacks involving unusual characters or encoded payloads within message fields. Regular security audits and penetration testing focused on user input handling across all modules will help identify similar weaknesses before they are exploited in production environments ensuring long term resilience against evolving cyber threats targeting educational technology platforms