CVE-2024-4664: 
WordPress vulnerability analysis and mitigation

The WP Chat App WordPress plugin before version 3.6.5 contains a Cross-Site Scripting (XSS) vulnerability identified as CVE-2024-4664. The vulnerability was discovered on June 6, 2024, and affects the plugin's settings functionality. The issue stems from insufficient sanitization and escaping of certain settings parameters (WPScan, NVD).

The vulnerability is classified as a Cross-Site Scripting (CWE-79) issue with a CVSS v3.1 base score of 4.8 (Medium) and vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N. The vulnerability exists in the plugin's settings where certain parameters are not properly sanitized and escaped before being stored or output. This affects the plugin's design settings, particularly in the widget text and widget label text fields (WPScan).

The vulnerability allows high-privilege users such as administrators to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed, such as in multisite setups. This could potentially lead to the execution of arbitrary JavaScript code in the context of other users' browsers who access the affected pages (NVD).

The vulnerability can be exploited by administrators through the plugin's design settings interface. A proof of concept exists that demonstrates the exploitation by manipulating the widget text and widget label text fields. The attack requires high privileges and user interaction to be successful (WPScan).

The vulnerability has been fixed in version 3.6.5 of the WP Chat App plugin. Site administrators are advised to update to this version or later to mitigate the risk (WPScan).