The CSSIgniter Shortcodes plugin for WordPress suffers from a stored cross-site scripting vulnerability (CWE-79) via the 'element' shortcode attribute. This flaw allows authenticated users with Contributor or higher privileges to inject malicious scripts due to improper neutralization of input during web page generation. The vulnerability affects all versions up to 2.4.1. Exploitation results in script execution in the context of users who access the injected pages. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, privileges required, no user interaction, and impacts on confidentiality and integrity but not availability. No patch or vendor advisory is currently provided, and no known exploits have been reported.

An attacker with Contributor-level or higher access can store malicious scripts in pages via the vulnerable shortcode attribute. These scripts execute in the browsers of users who view the compromised pages, potentially leading to theft of sensitive information or unauthorized actions within the context of the affected site. The vulnerability impacts confidentiality and integrity but does not affect availability. No known exploitation in the wild has been reported.

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