CVE-2023-39094 in studentmanager
Summary
by MITRE • 08/21/2023
Cross Site Scripting vulnerability in ZeroWdd studentmanager v.1.0 allows a remote attacker to execute arbitrary code via the username parameter in the student list function.
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Analysis
by VulDB Data Team • 01/23/2026
This cross site scripting vulnerability exists within the ZeroWdd studentmanager version 1.0 application where the student list function fails to properly sanitize user input submitted through the username parameter. The flaw represents a classic reflected xss vulnerability that allows remote attackers to inject malicious javascript code into the web application interface. The vulnerability occurs when the application directly incorporates user-supplied data into web page responses without appropriate input validation or output encoding mechanisms. According to the CWE catalog, this maps to CWE-79 which specifically addresses improper neutralization of input during web page generation, making it a well-documented and severe web application security weakness.
The technical execution of this vulnerability enables attackers to manipulate the student list display functionality by injecting malicious scripts through the username parameter. When a victim accesses the affected page with the malicious payload embedded in the username field, the injected javascript executes within the victim's browser context. This creates a persistent threat vector that can be leveraged for session hijacking, credential theft, or redirection to malicious domains. The vulnerability operates at the application layer and requires no privileged access to exploit, making it particularly dangerous as it can be triggered by any user with access to the student list functionality.
The operational impact of this vulnerability extends beyond simple script execution as it can be weaponized to perform sophisticated attacks against users of the student management system. Attackers can craft payloads that steal session cookies, redirect users to phishing sites, or inject additional malicious content into the application interface. This vulnerability directly impacts the confidentiality and integrity of the student data management system, as unauthorized code execution can lead to data exfiltration or modification of student records. The attack surface is particularly concerning given that student information systems often contain sensitive personal data that requires protection under privacy regulations such as gdpr andFERPA.
Mitigation strategies for this vulnerability should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application. The primary defense involves sanitizing all user inputs, particularly those used in dynamic web page generation, through proper encoding techniques such as html entity encoding for output rendering. Implementing a content security policy can further limit the execution scope of injected scripts, while regular security code reviews should be conducted to identify similar input handling issues. Additionally, the application should enforce strict input validation to reject or sanitize any characters that could be used in cross site scripting attacks, including but not limited to angle brackets, script tags, and javascript protocol handlers. This vulnerability aligns with several ATT&CK techniques including initial access through web application attacks and privilege escalation via malicious code execution within user sessions. The remediation process should also include implementing proper error handling to prevent information disclosure and establishing monitoring mechanisms to detect potential exploitation attempts.