CVE-2024-43439

Summary

CVE-2024-43439 is a newly identified vulnerability affecting Moodle, an open-source learning management system. The issue lies in the way H5P error messages are handled, which can allow an attacker to inject malicious scripts through reflected cross-site scripting (XSS) attacks. This vulnerability poses a significant risk, as error messages are often displayed to users, enabling attackers to execute scripts in their browsers even if they do not have user credentials. To mitigate this risk, administrators are advised to update their Moodle installations as soon as a patch becomes available. In the meantime, they should consider implementing additional security measures, such as Content Security Policy (CSP) headers, to restrict the execution of potentially harmful scripts.

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