The Query Wrangler plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 1.5.57 via the 'options' parameter parameter. This is due to missing capability check and nonce verification on the wp_ajax_qw_form_ajax handler, combined with unsanitized attacker-controlled options fully replacing saved query options and being passed directly to call_user_func_array() guarded only by function_exists(). This makes it possible for authenticated attackers, with subscriber-level access and above, to execute code on the server.
Exploitation requires only that at least one query row exists in the database, as the query_id is a small enumerable integer with no further access control.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 6
https://plugins.trac.wordpress.org/browser/query-wrangler/trunk/admin/ajax.php#…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/query-wrangler/trunk/admin/templates…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/query-wrangler/trunk/includes/fields…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/query-wrangler/trunk/query-wrangler.…
security@wordfence.com
https://plugins.trac.wordpress.org/changeset?reponame=&old=3640744%40query-wran…
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/2f9faa56-c550-465f-b0…
security@wordfence.com