The WP Ticket plugin for WordPress is vulnerable to SQL Injection via the WordPress search query parameter (s) in versions up to, and including, 6.0.4 The plugin hooks WordPress's posts_request filter with wp_ticket_com_posts_request(), which calls emd_author_search_results() when the current request is an unauthenticated front-end search. That function reads $query->query_vars['s'] — already wp_unslash()'d by WP_Query::parse_query(), so wp_magic_quotes protection has been stripped — and concatenates the raw value into a SQL LIKE clause inside a UNION sub-SELECT appended to the main query, with no $wpdb->prepare() or escaping. This makes it possible for unauthenticated attackers to append additional SQL queries into already-existing queries that can be used to extract sensitive information from the database.

References

• https://nvd.nist.gov/vuln/detail/CVE-2026-9848
• https://plugins.trac.wordpress.org/browser/wp-ticket/tags/6.0.4/includes/common-functions.php#L164
• https://plugins.trac.wordpress.org/browser/wp-ticket/tags/6.0.4/includes/common-functions.php#L174
• https://plugins.trac.wordpress.org/browser/wp-ticket/tags/6.0.4/includes/filter-functions.php#L22
• https://plugins.trac.wordpress.org/browser/wp-ticket/tags/6.0.4/includes/query-filters.php#L57
• https://plugins.trac.wordpress.org/changeset/3565099/wp-ticket/trunk/includes/common-functions.php
• https://plugins.trac.wordpress.org/changeset?old_path=%2Fwp-ticket/tags/6.0.4&new_path=%2Fwp-ticket/tags/6.0.5
• https://www.wordfence.com/threat-intel/vulnerabilities/id/98f16e3a-4ef3-43f9-86b2-2cf8e26f9c80?source=cve