The SortTable Post plugin for WordPress suffers from a stored XSS vulnerability due to improper neutralization of input in the 'id' parameter of the sorttablepost shortcode. This allows authenticated users with contributor or higher privileges to inject arbitrary JavaScript that executes upon user interaction with the injected page content. The issue affects all versions up to and including 4.2. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, privileges required at the contributor level, no user interaction required for exploitation after injection, and partial impact on confidentiality and integrity but no impact on availability.

An attacker with contributor-level access can inject persistent malicious scripts that execute in the browsers of users who view or interact with the compromised pages. This can lead to partial disclosure of sensitive information and modification of content within the affected site context. There is no indication of availability impact or known 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 released, restrict contributor-level access to trusted users only and consider removing or disabling the SortTable Post plugin if possible. Monitor for updates from the vendor regarding patches or official mitigations.