The Pollcaster Shortcode Plugin for WordPress suffers from a stored cross-site scripting vulnerability (CWE-79) via the 'height' parameter in the 'pollcaster' shortcode. This vulnerability is due to improper neutralization of input during web page generation, allowing authenticated users with contributor or higher privileges to inject arbitrary JavaScript code. The injected scripts execute in the context of users viewing the compromised pages, potentially leading to session hijacking or other script-based attacks. The vulnerability affects all versions up to 1.0 and has a CVSS 3.1 base score of 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N). There is no indication of known exploits in the wild or an available patch at this time.

An authenticated attacker with contributor-level access or higher can exploit this vulnerability to inject persistent malicious scripts into pages using the 'pollcaster' shortcode. These scripts execute in the browsers of users who visit the infected pages, potentially leading to information disclosure or manipulation of user sessions. The vulnerability impacts confidentiality and integrity but does not affect availability. No known active exploitation 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 Pollcaster Shortcode Plugin if possible. Monitor vendor channels for updates and apply patches promptly once available.