CVE-2020-36931 in Click2Magic
Summary
by MITRE • 01/25/2026
Click2Magic 1.1.5 contains a stored cross-site scripting vulnerability that allows attackers to inject malicious scripts in the chat name input. Attackers can craft a malicious payload in the chat name to capture administrator cookies when the admin processes user requests.
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Analysis
by VulDB Data Team • 01/26/2026
The vulnerability identified as CVE-2020-36931 affects Click2Magic version 1.1.5 and represents a critical stored cross-site scripting flaw that enables attackers to execute malicious code within the context of the targeted application. This vulnerability specifically resides in the chat name input field, where user-provided data is not properly sanitized or validated before being rendered back to other users. The flaw allows adversaries to inject malicious scripts that persist in the application's database, making it a stored XSS vulnerability rather than a reflected one. When administrators interact with user requests, they inadvertently execute the malicious scripts embedded in the chat names, potentially compromising their sessions and gaining unauthorized access to administrative functions.
The technical exploitation of this vulnerability follows a standard stored XSS attack pattern where the attacker crafts a malicious payload containing javascript code within the chat name field. The payload typically consists of script tags that execute when the administrator views the chat name, often leveraging techniques such as document.cookie extraction or redirection to attacker-controlled domains. The vulnerability stems from inadequate input validation and output encoding practices within the application's data handling pipeline, where user-supplied content flows directly into the user interface without proper sanitization. This flaw directly violates security principles outlined in the OWASP Top Ten 2017, specifically category a03, which addresses injection vulnerabilities including cross-site scripting.
The operational impact of this vulnerability is severe as it provides attackers with the ability to hijack administrator sessions and gain elevated privileges within the Click2Magic application. Successful exploitation allows threat actors to perform administrative actions such as modifying user permissions, accessing sensitive data, modifying chat configurations, or even deleting user accounts. The stolen cookies can be used to impersonate administrators and maintain persistent access to the system. From an ATT&CK framework perspective, this vulnerability maps to technique T1566.001 (Phishing via Social Media) and T1548.001 (Abuse Elevation Control Mechanism) as attackers can leverage the stolen session to escalate privileges and maintain access. The vulnerability also aligns with CWE-79, which describes improper neutralization of input during web page generation, making it particularly dangerous in web applications where user interaction is frequent.
Mitigation strategies for CVE-2020-36931 must address both immediate remediation and long-term security improvements. The primary fix involves implementing proper input validation and output encoding mechanisms that sanitize all user-provided data before it is stored or rendered. This includes implementing Content Security Policy headers, using HTML escaping techniques, and validating input length and character sets. Organizations should also implement proper access controls and session management practices, including secure cookie attributes and regular session invalidation. The vulnerability demonstrates the importance of input sanitization as outlined in the CWE catalog, specifically addressing CWE-116, which covers improper encoding of output during web page generation. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other input fields and application components. Additionally, implementing web application firewalls and intrusion detection systems can provide additional layers of protection against exploitation attempts.