CVE-2024-42787 identifies a stored Cross Site Scripting (XSS) vulnerability in Kashipara Music Management System version 1.0. The vulnerability exists in the /music/ajax.php endpoint when the action parameter is set to 'save_playlist'. Specifically, the 'title' and 'description' input fields are not properly sanitized or encoded, allowing attackers to inject malicious JavaScript code that is stored on the server and subsequently executed in the browsers of users who view the affected playlist data. This type of stored XSS can lead to session hijacking, credential theft, or unauthorized actions performed on behalf of the user. The vulnerability is remotely exploitable without requiring authentication, but user interaction is necessary to trigger the payload, such as viewing the compromised playlist. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N) reflects that the attack can be launched over the network with low complexity, no privileges, and requires user interaction, affecting confidentiality and integrity with a scope change. No patches or official fixes have been released yet, and no active exploitation has been reported. The vulnerability is categorized under CWE-79, which covers improper neutralization of input leading to XSS.

The primary impact of this vulnerability is on the confidentiality and integrity of user data within the Kashipara Music Management System. Attackers can execute arbitrary scripts in the context of users' browsers, potentially stealing session tokens, cookies, or other sensitive information. This can lead to account compromise or unauthorized actions performed on behalf of legitimate users. Although availability is not directly affected, the trustworthiness of the application is undermined, which can result in reputational damage and loss of user confidence. Organizations relying on this system for music management or streaming services may face data breaches or unauthorized access incidents. The scope of impact is limited to users who interact with the maliciously crafted playlists, but since no authentication is required to inject the payload, the attack surface is broad. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, especially once exploit code becomes publicly available.

To mitigate this vulnerability, organizations should implement strict input validation and output encoding on the 'title' and 'description' parameters within the /music/ajax.php?action=save_playlist endpoint. Employing a whitelist approach for allowed characters and sanitizing inputs to remove or encode HTML and JavaScript content is critical. Additionally, adopting Content Security Policy (CSP) headers can help restrict the execution of unauthorized scripts in users' browsers. Regularly updating and patching the Kashipara Music Management System when official fixes become available is essential. In the interim, consider deploying Web Application Firewalls (WAFs) with rules to detect and block XSS payloads targeting these parameters. Educating users about the risks of interacting with untrusted playlists and monitoring application logs for suspicious input patterns can further reduce risk. Finally, conducting security code reviews and penetration testing focused on input handling will help identify and remediate similar vulnerabilities.