Description
The plugin provides an Admin Search page that allows users with the `edit_posts` capability to run Relevanssi searches from the WordPress dashboard. The AJAX handler accepts a URL-encoded `args` parameter, parses it into a `WP_Query`, and then passes user-controlled taxonomy query data into Relevanssi's taxonomy restriction builder. The taxonomy value is sanitized as text but is not parameterized for SQL before being interpolated into a term taxonomy lookup query. This allows an authenticated contributor-level attacker to inject SQL through the Admin Search AJAX request and execute time-based blind SQL injection against the WordPress database.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Relevanssi Relevanssi Premium – A Better Search
Default version status: unaffected
0 to ≤ 2.30.2affected
comesio Relevanssi – A Better Search
Default version status: unaffected
0 to ≤ 4.27.1affected
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/4f96b87a-1405-4cf6-b903-ad0c7c8e2826?source=cve ↗
- https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.27.1/lib/search-tax-query.php#L411 ↗
- https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.27.1/lib/admin-ajax.php#L195 ↗
- https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.27.1/lib/search.php#L969 ↗