The Social Share With Floating Bar WordPress plugin suffers from a reflected XSS vulnerability due to the use of add_query_arg without proper escaping on URL parameters. This flaw exists in all versions up to and including 1.0.3. An attacker can craft a malicious URL that, when clicked by a user, executes arbitrary JavaScript in the context of the affected site. The vulnerability is unauthenticated and requires user interaction (clicking a link). The CVSS 3.1 score is 6.1, indicating a medium severity with network attack vector, low attack complexity, no privileges required, user interaction needed, and impacts confidentiality and integrity with no impact on availability.

Successful exploitation allows an attacker to execute arbitrary scripts in the context of the vulnerable website, potentially leading to information disclosure or manipulation of site content for affected users. Since it is a reflected XSS, the attacker must trick users into clicking a malicious link. There is no indication of exploitation in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider disabling or removing the Social Share With Floating Bar plugin or implementing web application firewall (WAF) rules to block malicious input patterns targeting this vulnerability. Avoid clicking suspicious links related to the affected plugin.