This vulnerability involves improper neutralization of input during web page generation (CWE-79) in the cozyvision1 SMS Alert plugin for WooCommerce. Specifically, the sa_subscribe shortcode does not properly sanitize or escape user-supplied attributes, enabling stored cross-site scripting attacks. Authenticated attackers with contributor or higher privileges can inject arbitrary JavaScript that executes in the context of users viewing the injected pages. This can lead to limited confidentiality and integrity impacts but does not affect availability. The vulnerability is present in all plugin versions up to 3.7.5.

An attacker with contributor-level or higher access can inject persistent malicious scripts into pages via the sa_subscribe shortcode. When other users view these pages, the scripts execute in their browsers, potentially leading to session hijacking, unauthorized actions, or data exposure limited to the scope of the injected script. The CVSS vector indicates network attack vector, low attack complexity, privileges required, no user interaction, and scope change with low confidentiality and integrity impacts and no availability impact.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and consider disabling or removing the sa_subscribe shortcode functionality if possible to reduce exposure.