The Header Footer Script Adder WordPress plugin (versions up to 2.0.5) contains a stored cross-site scripting vulnerability (CWE-79) due to improper neutralization of input during web page generation. Authenticated attackers with Contributor-level privileges or higher can inject arbitrary scripts into posts via the plugin's script adder feature. These scripts execute in the context of users viewing the compromised pages, potentially leading to information disclosure or session hijacking. The vulnerability has a CVSS 3.1 base score of 6.4, reflecting network attack vector, low attack complexity, and privileges required. No patch or official fix information is currently provided, and no exploits are known in the wild.

Successful exploitation allows authenticated users with Contributor-level access or above to inject and store malicious scripts that execute in the browsers of users who view the infected pages. This can lead to limited confidentiality and integrity impacts such as theft of user credentials or session tokens. There is no impact on availability. The vulnerability requires authentication and is of medium severity.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, limit Contributor-level access to trusted users only. Consider removing or disabling the Header Footer Script Adder plugin if possible. Monitor official vendor channels for updates and apply patches promptly once released.