CVE-2025-30973 in CoSchool LMS Plugin
Summary
by MITRE • 07/16/2025
Deserialization of Untrusted Data vulnerability in Codexpert, Inc CoSchool LMS allows Object Injection. This issue affects CoSchool LMS: from n/a through 1.4.3.
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Analysis
by VulDB Data Team • 07/16/2025
The vulnerability CVE-2025-30973 represents a critical deserialization flaw in the CoSchool Learning Management System developed by Codexpert Inc. This issue manifests as a deserialization of untrusted data vulnerability that enables object injection attacks, fundamentally compromising the security posture of affected systems. The vulnerability exists within the CoSchool LMS platform and affects versions ranging from the initial release through version 1.4.3, indicating a prolonged exposure window that could have allowed attackers to exploit this weakness for extended periods.
The technical flaw stems from the application's improper handling of serialized data objects during processing. When the CoSchool LMS receives input data that contains serialized objects, it fails to adequately validate or sanitize this input before deserializing it into executable code objects. This weakness creates a direct pathway for attackers to inject malicious serialized objects that can be executed within the application's runtime environment. The vulnerability aligns with CWE-502, which specifically addresses deserialization of untrusted data as a critical security concern. Attackers can leverage this flaw to execute arbitrary code on the target system, potentially leading to complete system compromise.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with significant privileges within the CoSchool LMS environment. Successful exploitation could enable unauthorized users to access sensitive educational data, modify course content, manipulate user accounts, or even establish persistent backdoors within the learning management system. The vulnerability affects the core functionality of the platform, potentially disrupting educational services and compromising the integrity of the entire learning environment. Organizations using CoSchool LMS in educational settings face heightened risks of data breaches, privacy violations, and potential regulatory compliance issues.
Mitigation strategies for CVE-2025-30973 require immediate action to address the root cause of the deserialization vulnerability. Organizations should implement input validation and sanitization measures that prevent untrusted data from being processed as serialized objects. The recommended approach includes implementing strict type checking mechanisms, using safe deserialization libraries, and employing object validation before processing any serialized input. Additionally, organizations should consider implementing application-level firewalls, network segmentation, and regular security assessments to detect and prevent exploitation attempts. The vulnerability demonstrates the importance of following secure coding practices as outlined in the OWASP Top Ten and aligns with ATT&CK technique T1548.004 for abuse of credentials, as exploitation could lead to privilege escalation and unauthorized access. Organizations should also implement monitoring solutions to detect anomalous deserialization patterns and establish incident response procedures to address potential exploitation attempts.