External risk intelligence

GUnet Open eClass Platform Chat Input Code Execution

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2024-31026

The Open eClass Platform is a web-based learning management system designed for educational institutions. Such platforms are typically deployed as public-facing web applications to allow students and faculty remote access, making the chat module, which processes user input, a commonly exposed component reachable from the internet.

Code Injection

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical vulnerability has been identified in the Greek Universities Network (GUnet) Open eClass Platform, which could permit unauthorized remote code execution. This issue affects a widely used educational technology platform, potentially impacting how institutions deliver online learning and manage digital content. The primary concern at this stage is to confirm the relevance and exposure of this specific platform within our environment.

Code can be run remotely through a learning platform.
Educational platforms are common and widely accessible.
Confirm if our learning system is affected.

Attack Path

How an attacker could exploit the issue

An unauthenticated attacker could exploit this vulnerability by sending specially crafted input through the chat feature within the course module. This input would be processed by the platform, allowing the attacker to inject code that could then be executed, potentially leading to full system compromise.

No authentication or user interaction needed.
Attacker sends malicious input to chat.
Remote code execution and system compromise.

Live Threat

Current exploitation, exposure, and threat context

A remote attacker could execute arbitrary code by sending a crafted message to the chat input field within the course module. This could lead to unauthorized access and manipulation of the platform's functionality.

System data integrity and availability.
Remote code execution via chat input.
Unauthorized access and control.

Operational Fix

Recommended remediation, mitigation, and detection steps

The Open eClass Platform's chat module, used by Greek Universities Network (GUnet), presents a critical remote code execution risk. Ownership likely resides with the institution's IT or application management teams responsible for the platform. The first step is to confirm the platform's deployment and exposure, identify the accountable owner, and then assess the business criticality to prioritize remediation, potentially involving vendor coordination or temporary risk reduction measures.

Platform owners should be accountable.
Verify platform exposure and reachability.
Plan remediation based on identified risk.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

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Frequently asked questions

What is the GUnet Open eClass Platform?

It is a web-based learning management system used by educational institutions to facilitate online courses. The platform provides digital tools for student and faculty interaction, including a course-specific chat module that handles real-time communication between users.

What does CWE-94 mean for CVE-2024-31026?

CWE-94 refers to improper control of generation of code. In this vulnerability, the chat feature fails to properly sanitize or restrict input, allowing an attacker to inject and execute their own instructions on the underlying server instead of treating the message as simple text.

How can an attacker trigger this chat vulnerability?

The flaw is triggered by submitting specially crafted input through the chat interface in the course module. Because the application does not validate this data, it processes the input as code. Standard or benign chat messages do not trigger the bug.

Is my instance of Open eClass at risk?

Halo Surface Signal indicates that because this is a web-based learning platform, it is often configured as a public-facing application to support remote access. If your installation is reachable from the internet, it is considered exposed to this threat.

What should I do first to manage this risk?

Identify if your organization runs the affected version of the Open eClass platform. Locate the team responsible for managing the software, confirm the server's network exposure, and prioritize the system based on its role in your educational operations.

References

panagiotiscp.github.io/cve-2024-31026-html-injection/

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.