CVE-2023-51337 in Event Ticketing System
Summary
by MITRE • 02/20/2025
PHPJabbers Event Ticketing System v1.0 is vulnerable to Reflected Cross-Site Scripting (XSS) in "lid" parameter in index.
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Analysis
by VulDB Data Team • 03/08/2026
The PHPJabbers Event Ticketing System version 1.0 contains a critical reflected cross-site scripting vulnerability that affects the application's index page through the "lid" parameter. This vulnerability falls under the CWE-79 category of Cross-Site Scripting and represents a significant security risk for any organization utilizing this ticketing system. The flaw occurs when user input from the lid parameter is directly reflected back to the browser without proper sanitization or encoding, creating an avenue for malicious actors to inject arbitrary JavaScript code.
The technical implementation of this vulnerability allows attackers to craft malicious URLs containing script payloads within the lid parameter that will execute in the context of other users' browsers when they access the vulnerable page. When a victim clicks on such a crafted link, the malicious script code gets executed in their browser session, potentially leading to session hijacking, credential theft, or redirection to malicious websites. The reflected nature of this vulnerability means that the attack payload is not stored on the server but rather delivered through the request parameter itself, making it particularly dangerous for web applications that rely on user input for dynamic content generation.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable sophisticated attack chains within the context of the event ticketing system. An attacker could leverage this vulnerability to steal user sessions, manipulate ticket purchasing processes, or gain unauthorized access to sensitive event data. The vulnerability affects the core functionality of the system's index page, which serves as a primary entry point for users, making it an attractive target for exploitation. This type of vulnerability can also facilitate further attacks within the network by serving as a foothold for more advanced penetration testing activities.
Security professionals should prioritize immediate remediation of this vulnerability through proper input validation and output encoding practices. The recommended mitigation involves implementing strict input sanitization for all user-supplied parameters, particularly those used in dynamic page generation. Organizations should implement Content Security Policy headers to limit script execution and utilize proper parameter validation techniques that prevent malicious payloads from being processed. The vulnerability demonstrates the importance of following secure coding practices and adhering to OWASP Top Ten security guidelines, particularly those addressing input validation and output encoding. Additionally, implementing web application firewalls and regular security scanning can help detect and prevent exploitation attempts. This vulnerability also aligns with ATT&CK technique T1566.001 for initial access through spearphishing attachments and links, highlighting the need for comprehensive security awareness training alongside technical controls.