CVE-2009-4742 in Docebo
Summary
by MITRE
Multiple SQL injection vulnerabilities in Docebo 3.6.0.3 allow remote attackers to execute arbitrary SQL commands via (1) the word parameter in a play help action to the faq module, reachable through index.php; (2) the word parameter in a play keyw action to the link module, reachable through index.php; (3) the id_certificate parameter in an elemmetacertificate action to the meta_certificate module, reachable through index.php; or (4) the id_certificate parameter in an elemcertificate action to the certificate module, reachable through index.php.
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Analysis
by VulDB Data Team • 05/03/2026
The CVE-2009-4742 vulnerability represents a critical SQL injection flaw affecting Docebo 3.6.0.3 learning management system. This vulnerability stems from inadequate input validation and improper parameter handling within multiple modules of the application. The flaw allows remote attackers to execute arbitrary SQL commands by manipulating specific parameters in HTTP requests, potentially leading to complete system compromise and unauthorized data access. The vulnerability is particularly concerning as it affects core functionality modules including FAQ, link, meta_certificate, and certificate components, all accessible through the main index.php entry point.
The technical implementation of this vulnerability manifests through four distinct attack vectors that exploit the same underlying flaw in input sanitization. The first vector targets the word parameter within the play help action of the faq module, while the second exploits the same parameter in the play keyw action of the link module. Additionally, two more vectors target the id_certificate parameter in both the elemmetacertificate action of the meta_certificate module and the elemcertificate action of the certificate module. These attack paths demonstrate a pattern of insufficient parameter validation where user-supplied input directly influences SQL query construction without proper sanitization or escaping mechanisms. This vulnerability aligns with CWE-89, which specifically addresses SQL injection weaknesses in software applications.
The operational impact of CVE-2009-4742 extends beyond simple data theft to encompass complete system compromise and potential lateral movement within network environments. Attackers exploiting these vulnerabilities can gain unauthorized access to the database, extract sensitive information including user credentials, manipulate course content, and potentially establish persistent backdoors. The remote nature of these attacks means that exploitation can occur from any location without requiring physical access to the system. This vulnerability particularly affects educational institutions and organizations relying on Docebo for training and learning management, potentially exposing student records, instructor information, and proprietary course materials. The attack surface is further expanded due to the common accessibility of the index.php entry point, making these vulnerabilities easily discoverable and exploitable.
Mitigation strategies for CVE-2009-4742 must address the root cause through comprehensive input validation and parameter sanitization. Organizations should immediately implement proper SQL query parameterization techniques, ensuring that all user inputs are properly escaped or validated before being incorporated into database queries. The recommended approach involves using prepared statements or parameterized queries to separate SQL code from data, thereby eliminating the possibility of SQL injection. Additionally, implementing proper access controls and input filtering mechanisms at the application level can significantly reduce exploitation risks. Organizations should also consider network-level protections such as web application firewalls and intrusion detection systems to monitor for suspicious SQL injection patterns. The vulnerability demonstrates the critical importance of following secure coding practices and adhering to industry standards like those outlined in the OWASP Top Ten and MITRE ATT&CK framework, which specifically categorize SQL injection as a persistent threat requiring proactive defense mechanisms. Regular security assessments and code reviews should be implemented to identify similar vulnerabilities in other application components and ensure comprehensive protection against similar attack vectors.