SQL Injection in Comesio Relevanssi – A Better Search
CVE-2026-15941
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.
Vulnerability class: SQL Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (35.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Comesio Relevanssi – A Better Search — versions 0
- Relevanssi Premium – A Better Search — versions 0
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/4f96b87a-1405-4cf6-b903-ad0c7…
- plugins.trac.wordpress.org/browser/relevanssi/tags/4.27.1/lib/search-tax-query…
- plugins.trac.wordpress.org/browser/relevanssi/tags/4.27.1/lib/admin-ajax.php
- plugins.trac.wordpress.org/browser/relevanssi/tags/4.27.1/lib/search.php
Frequently asked questions
- What is CVE-2026-15941?
- CVE-2026-15941 is a medium-severity vulnerability in Comesio Relevanssi – A Better Search, classified under SQL Injection. CVSS score: 6.5/10. Published 2026-08-05.
- How severe is CVE-2026-15941?
- Medium severity. CVSS v3 base score is 6.5 out of 10.