Chamilo LMS, a widely used learning management system, has been identified with a high-severity vulnerability, CVE-2026-32930. The vulnerability stems from an Insecure Direct Object Reference (IDOR) in the gradebook evaluation edit page. This flaw permits any authenticated teacher to view and modify evaluation settings (e.g., name, max score, weight) belonging to other courses by manipulating the editeval GET parameter. As a result, this could lead to unauthorized changes and potential data integrity issues.
The CVSS score for this vulnerability is 7.1, categorized as high. This assessment indicates that it can be exploited over a network with low complexity and minimal privileges required, reflecting a significant risk to organizations that utilize Chamilo LMS. As such, organizations must take immediate action to mitigate the risk.
This vulnerability allows unauthorized access and modification of evaluation settings, which can severely impact the learning environment and trust in the system. Given the nature of educational data, the risk to organizations includes potential data manipulation and loss of integrity in student assessments. Organizations should prioritize patching immediately to prevent exploitation.
The vulnerability has been resolved in versions 1.11.38 and 2.0.0-RC.3. Therefore, it is crucial for users to upgrade to these versions or later to ensure they are protected against this vulnerability.
Currently, there are no confirmed public exploits or known active exploitation of this vulnerability, but the potential impact warrants immediate attention.
Vulnerability Details
The CVE-2026-32930 vulnerability exists in Chamilo LMS prior to versions 1.11.38 and 2.0.0-RC.3. It is classified under CWE-639, which indicates an issue related to improper access control. The specific details of the vulnerability allow authenticated users to manipulate the evaluation settings of other courses, leading to potential unauthorized changes.
The vulnerability was published on April 10, 2026, and is considered analyzed. The integrity impact is rated as high, while confidentiality impact is low, and there is no availability impact.
Technical Analysis
The root cause of this vulnerability is the failure to enforce proper access controls on the gradebook evaluation edit page. This oversight allows any authenticated teacher to access and modify evaluations across different courses without restrictions, which should not be permissible.
The attack vector for this vulnerability is network-based, meaning that an attacker can exploit it without physical access to the system. The complexity level of the attack is low, as it requires minimal technical skills to manipulate the GET parameter. The privileges required are also low, as any authenticated teacher can perform the exploit without additional credentials.
User interaction is not necessary for exploitation. The vulnerability has low confidentiality impact because it does not expose sensitive data directly; however, it has a high integrity impact due to the potential for unauthorized modifications of evaluation data. There is no impact on availability.
Risk & Impact Analysis
The risk to organizations includes the possibility of unauthorized modifications to evaluation settings, which can undermine the trust in the grading system and potentially affect academic integrity. This vulnerability could result in significant consequences, including the alteration of grades and evaluations, leading to disputes and loss of credibility.
Organizations using Chamilo LMS must assess their deployment risk and implement the necessary patches as soon as possible. The urgency is categorized as high, given the potential for exploitation, especially in educational contexts where accurate assessments are critical.
The blast radius for this vulnerability could be substantial, as it affects all authenticated teachers across the system. Therefore, organizations should take immediate steps to remediate the vulnerability and prevent any unauthorized access to their evaluation systems.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerable versions of Chamilo LMS include all versions prior to 1.11.38 and 2.0.0-RC.3. Users are strongly advised to upgrade to the latest versions to protect against this vulnerability.
Mitigation & Remediation
Organizations should implement the following mitigation strategies:
1. Upgrade to Chamilo LMS version 1.11.38 or 2.0.0-RC.3 or later.
2. Ensure that access controls are properly enforced on sensitive pages to prevent unauthorized modifications.
3. Regularly review permissions for authenticated users to limit access to necessary functionalities only.
Organizations may consider utilizing penetration testing to assess their security posture and identify any other potential vulnerabilities.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor for unusual access patterns or changes to evaluation settings. Specific indicators include:
1. Log entries that show unauthorized changes to evaluation settings.
2. Behavioral anomalies in user activities, particularly among teachers.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2026-32930 highlights the importance of robust access control mechanisms in web applications. Security teams should take note of the patterns that emerge from this vulnerability, particularly the need for regular audits of permission settings. This incident serves as a reminder of the potential risks associated with IDOR vulnerabilities and underscores the importance of a proactive security posture.
For further insights, organizations can explore our resources on IDOR mitigation strategies and learn how to secure their applications effectively.
In conclusion, maintaining vigilance and implementing security best practices is essential for mitigating risks associated with vulnerabilities like CVE-2026-32930.
Organizations should also stay updated with threats and trends in the cybersecurity landscape to adapt their defenses accordingly.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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