CVE-2023-51370: 
WordPress vulnerability analysis and mitigation

A Stored Cross-Site Scripting (XSS) vulnerability was discovered in NinjaTeam's WP Chat App WordPress plugin, identified as CVE-2023-51370. The vulnerability affects versions up to and including 3.4.4 of the plugin. The issue was initially reported on August 30, 2023, and publicly disclosed on December 26, 2023 (Patchstack).

The vulnerability stems from improper neutralization of input during web page generation, specifically in the plugin's settings. The issue allows high-privilege users such as administrators to perform Stored Cross-Site Scripting attacks, even when the unfiltered_html capability is disallowed, such as in multisite setups. The vulnerability has been assigned a CVSS v3.1 score of 5.9 (Medium) by Patchstack and 4.8 (Medium) by NIST, with the vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N (NVD, WPScan).

The vulnerability could allow malicious actors to inject harmful scripts, including redirects and advertisements, as well as other HTML payloads into the website. These injected scripts would be executed when guests visit the affected site. The impact is considered low severity and is unlikely to be exploited due to the requirement of administrative privileges (Patchstack).

The vulnerability has been patched in version 3.4.5 of the WP Chat App plugin. Users are advised to update to version 3.4.5 or later to remove the vulnerability. Patchstack users have the option to enable auto-update for vulnerable plugins (Patchstack).