The WPShop.ru CallPhone'r plugin suffers from a CSRF vulnerability that enables attackers to inject stored XSS payloads by tricking authenticated users into submitting crafted requests. This affects all versions up to 1.1.1. The vulnerability has a CVSS 3.1 base score of 7.1, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, and low impact on confidentiality, integrity, and availability.

Successful exploitation can lead to stored XSS attacks, allowing attackers to execute arbitrary scripts in the context of the victim's browser. This can result in session hijacking, defacement, or other malicious actions within the affected application. The vulnerability requires user interaction and can be triggered remotely without authentication.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider disabling the CallPhone'r plugin or restricting access to trusted users only. Applying web application firewall (WAF) rules to detect and block CSRF and XSS attempts may provide temporary mitigation.