CVE-2023-30874: 
WordPress vulnerability analysis and mitigation

A Stored Cross-Site Scripting (XSS) vulnerability was discovered in the GPS Plotter WordPress plugin versions 5.3.0 and below. The vulnerability was identified on April 19, 2023, and was assigned CVE-2023-30874. This security issue affects the plugin developed by Steve Curtis, St. Pete Design (Patchstack).

The vulnerability is classified as a Stored Cross-Site Scripting (XSS) issue (CWE-79) that affects authenticated users with administrative privileges. The CVSS v3.1 base score is 4.8 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N. The vulnerability exists because the plugin does not properly sanitize and escape some of its settings, which could allow 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 (WPScan).

The vulnerability could allow malicious actors with administrative access to inject malicious scripts, including redirects, advertisements, and other HTML payloads into the website. These injected scripts would be executed when guests visit the affected site (Patchstack).

As of the latest reports, there is no official fix available for this vulnerability. The issue affects versions up to and including 5.3.0 of the GPS Plotter plugin (WPScan).