The crossfitatgg LeaderBoard Plugin (leaderboard-lite) suffers from a CSRF vulnerability that enables stored XSS attacks. This affects all versions up to 1.2.4. The vulnerability allows an attacker to trick an authenticated user into submitting a crafted request that results in malicious script storage, potentially impacting confidentiality, integrity, and availability. The CVSS 3.1 base score is 7.1, indicating a high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and scope changed.

Successful exploitation can lead to stored XSS, which may allow attackers to execute arbitrary scripts in the context of the affected application, potentially compromising user data, session tokens, or performing actions with the user's privileges. The vulnerability impacts confidentiality, integrity, and availability to a limited extent as indicated by the CVSS vector. No known exploits in the wild have been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider disabling the plugin or restricting its use to trusted users only. Implementing additional CSRF protections at the application or web server level may help mitigate risk.