CVE-2024-50410 in Namaste LMS Plugin
Summary
by MITRE • 10/29/2024
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Bob Namaste! LMS namaste-lms allows Stored XSS.This issue affects Namaste! LMS: from n/a through <= 2.6.4.
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Analysis
by VulDB Data Team • 04/07/2026
This vulnerability represents a critical cross-site scripting flaw in the Bob Namaste LMS from the initial release through version 2.6.4, indicating a long-standing issue that has not been adequately addressed in the software lifecycle.
The technical implementation of this vulnerability aligns with CWE-79 which defines cross-site scripting as a code injection attack that occurs when an application includes untrusted data in a new web page without proper validation or escaping. In this case the flaw manifests as a stored XSS vulnerability where malicious payloads are permanently stored within the application's database or storage mechanisms rather than being reflected in a single request. The vulnerability allows attackers to execute arbitrary javascript code in the context of other users' browsers, potentially enabling session hijacking, credential theft, or redirection to malicious sites. The stored nature of the vulnerability means that once an attacker successfully injects malicious code, it will persist and affect all users who view the affected content.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it can enable attackers to establish persistent access to the learning management system. An attacker could inject malicious scripts that steal user credentials, manipulate course content, or redirect users to phishing sites that appear legitimate within the LMS environment. The vulnerability also poses risks to the integrity of educational data and user privacy, as malicious actors could access sensitive course materials, grades, or personal information. Additionally, the stored nature of the exploit means that the impact compounds over time, as each new user who accesses the affected content becomes a potential victim of the injected malicious code. This makes the vulnerability particularly dangerous in educational environments where multiple users interact with the same systems and where trust in the platform is paramount.
Mitigation strategies should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application's data flow. The most effective immediate solution involves sanitizing all user inputs before storage and properly escaping all dynamic content before rendering in web pages. Organizations should implement Content Security Policy headers to limit script execution and consider implementing web application firewalls to detect and block malicious payloads. Regular security updates and patches should be applied immediately upon availability, with particular attention to input handling routines that process user-generated content. Additionally, implementing proper access controls and monitoring for unusual user behavior can help detect exploitation attempts. The vulnerability demonstrates the critical importance of following secure coding practices as outlined in the OWASP Top Ten and ATT&CK framework, specifically addressing the techniques related to command and control communications and credential access through web-based attacks.