CVE-2023-51306 in Event Ticketing System
Summary
by MITRE • 02/20/2025
PHPJabbers Event Ticketing System v1.0 is vulnerable to Multiple Stored Cross-Site Scripting (XSS) in the "name, title" parameters.
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Analysis
by VulDB Data Team • 03/07/2026
The PHPJabbers Event Ticketing System version 1.0 contains multiple stored cross-site scripting vulnerabilities that pose significant security risks to web applications utilizing this software. These vulnerabilities specifically affect the "name" and "title" parameters within the system, allowing attackers to inject malicious scripts that persist in the application's database and execute whenever affected pages are loaded. The stored nature of these vulnerabilities means that once malicious code is injected, it will automatically execute for any user who views the affected content, making these flaws particularly dangerous in multi-user environments where different users may encounter the same malicious payloads.
The technical flaw stems from inadequate input validation and output escaping mechanisms within the application's data handling processes. When users submit data containing the vulnerable parameters, the system fails to properly sanitize or encode the input before storing it in the database. This allows malicious scripts to be stored alongside legitimate data and subsequently executed in the context of other users' browsers when the stored information is rendered on web pages. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and represents a classic case of insufficient sanitization of user-supplied input. The attack vector operates through the standard HTTP request processing flow where user-provided data flows directly into database storage without proper security controls.
The operational impact of these stored XSS vulnerabilities extends beyond simple script execution, potentially enabling attackers to perform session hijacking, deface web applications, steal sensitive user information, or redirect users to malicious sites. An attacker who successfully exploits these vulnerabilities could gain access to user sessions, credentials, or personal information stored within the application context. The persistent nature of stored XSS makes these vulnerabilities particularly attractive to threat actors as they can maintain long-term access to the compromised system. According to ATT&CK framework, this vulnerability maps to T1531 - Establish Persistence and T1071.004 - Application Layer Protocol: DNS, as attackers may use these vulnerabilities to maintain access or exfiltrate data through DNS tunneling techniques. The affected system could also be used as a launchpad for more sophisticated attacks targeting other components within the same network infrastructure.
Mitigation strategies should include immediate implementation of proper input validation and output encoding mechanisms throughout the application's data flow processes. All user-supplied input containing the vulnerable "name" and "title" parameters must be thoroughly sanitized using established security libraries and encoding functions before storage. The application should implement Content Security Policy headers to limit script execution and prevent unauthorized code injection. Regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other parts of the application. Additionally, implementing proper access controls and least privilege principles can limit the impact of successful exploitation attempts. System administrators should also consider deploying web application firewalls and monitoring solutions to detect and prevent exploitation attempts. The vulnerability demonstrates the critical importance of input validation in preventing XSS attacks and highlights the necessity of following secure coding practices as outlined in OWASP Top Ten and other industry security standards.