CVE-2019-25731 in Music
Summary
by MITRE • 06/04/2026
Zuz Music 2.1 contains a persistent cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious JavaScript by submitting crafted contact form data. Attackers can inject script code through the name, subject, and message parameters in POST requests to /gmusic/zuzconsole/___contact, which executes when administrators view messages in the inbox interface.
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Analysis
by VulDB Data Team • 06/04/2026
This vulnerability represents a critical persistent cross-site scripting flaw in Zuz Music 2.1 that enables unauthenticated attackers to execute malicious JavaScript code within the context of administrator sessions. The vulnerability exists in the contact form processing functionality at the endpoint /gmusic/zuzconsole/___contact where the application fails to properly sanitize user input parameters including name, subject, and message fields. When administrators subsequently view the injected malicious code through the inbox interface, the scripts execute with the privileges of the authenticated user, potentially compromising the entire administrative session.
The technical implementation of this vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws where untrusted data is incorporated into web pages without proper validation or encoding. This persistent nature means that the malicious scripts remain embedded in the application's database or storage system, executing every time the affected page is loaded or viewed by administrators. The attack vector operates through standard HTTP POST requests containing malicious payloads in the vulnerable parameters, making it particularly dangerous as it requires no authentication from the attacker's perspective. The vulnerability demonstrates poor input validation practices and inadequate output encoding mechanisms that are fundamental to preventing XSS attacks.
The operational impact of this vulnerability extends beyond simple script execution as it provides attackers with the capability to perform session hijacking, steal administrative credentials, modify application data, or redirect users to malicious websites. Administrators who view the contact form submissions containing the injected scripts become victims of the attack, potentially leading to complete system compromise. The vulnerability affects the application's integrity and confidentiality as it allows unauthorized data manipulation and unauthorized access to privileged functions within the Zuz Music administration interface. Attackers could leverage this to escalate privileges, access sensitive user information, or even gain persistent access to the application through the compromised administrator account.
Mitigation strategies should focus on implementing comprehensive input validation and output encoding mechanisms to prevent malicious code injection. The application must sanitize all user-supplied input through proper parameter validation and ensure that all output is encoded according to the context in which it is rendered. Security measures should include implementing Content Security Policy headers to limit script execution, employing web application firewalls to detect and block suspicious payloads, and conducting regular security testing including automated scanning and manual penetration testing. Additionally, the application should implement proper access controls and audit logging to detect unauthorized access attempts and monitor for potential exploitation of this vulnerability. The fix should involve proper parameterized queries and input sanitization techniques to prevent any form of code injection, aligning with industry best practices established by organizations such as OWASP and NIST.