The Tax Switch for WooCommerce plugin suffers from a stored XSS vulnerability due to improper neutralization of input in the 'class-name' parameter. Authenticated attackers with Contributor or higher privileges can inject arbitrary JavaScript code that executes in the context of users visiting the affected pages. This vulnerability is identified as CWE-79 and affects all plugin versions up to 1.4.2. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, requiring privileges, no user interaction, and partial impact on confidentiality and integrity without availability impact. No patch or official fix has been documented in the provided data.

Successful exploitation allows an attacker with Contributor-level access or above to inject persistent malicious scripts into pages generated by the plugin. This can lead to partial compromise of confidentiality and integrity of user data within the affected WordPress environment. There is no indication of availability impact or known active exploitation in the wild at this time.

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 Tax Switch for WooCommerce plugin if possible. Monitor for updates from the vendor or WordPress plugin repository regarding patches or mitigations.