CVE-2026-15941: Comesio Relevanssi – A Better Search

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

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

• Comesio Relevanssi – A Better Search: up to and including 4.27.1
• Relevanssi Relevanssi Premium – A Better Search: up to and including 2.30.2

Published 2026-08-05. Last modified 2026-08-12.