CVE-2021-36871: 
WordPress vulnerability analysis and mitigation

Multiple Authenticated Persistent Cross-Site Scripting (XSS) vulnerabilities were discovered in WordPress WP Google Maps Pro premium plugin versions 8.1.11 and below. The vulnerability was assigned CVE-2021-36871 and was first reported on June 15, 2021. The vulnerable parameters include wpgmaps_marker_category_name, attributes[] (Value and Name), icons[], names[], description, link, and title (Patchstack).

The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation) with a CVSS v3.1 Base Score of 5.4 (Medium) according to NVD, and 5.5 (Medium) according to Patchstack. The CVSS vector string is CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N, indicating that the vulnerability requires network access, low attack complexity, low privileges, and user interaction (NVD).

The vulnerability could allow a malicious actor to inject malicious scripts, such as redirects, advertisements, and other HTML payloads into the website which will be executed when guests visit the site. The impact is considered low to medium severity, requiring authenticated access to exploit (Patchstack).

The vulnerability was fixed in version 8.1.12 of the WP Google Maps Pro plugin. Users are advised to update to version 8.1.12 or later to remove the vulnerability. Patchstack users can enable auto-update for vulnerable plugins as an additional security measure (Patchstack).