The WP Subtitle WordPress plugin before 3.4.1 adds a subtitle field and provides a shortcode to display it via [wp_subtitle]. The subtitle is stored as a custom post meta with the key: "wps_subtitle", which is sanitized upon post save/update, however is not sanitized when updating it directly from the post meta update button (via AJAX) - and this makes the XSS exploitable by authenticated users with a role as low as contributor.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Wp Subtitle Plugin | — | Update wp-subtitle plugin to version 3.4.1, or a newer patched version | May 15, 2025 | Apr 25, 2022 |
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