Groundhogg Plugin SQL Injection Flaws

SQL injection in the Groundhogg CRM, Newsletters, and Marketing Automation WordPress plugin exposes the underlying WordPress database to authenticated attackers holding marketer-level access or higher. The 'search' parameter is insufficiently escaped across at least five distinct code paths - spanning db/db.php, db/steps.php, and api/v4/base-object-api.php - allowing appended SQL payloads to exfiltrate sensitive data including contact records, campaign data, and potentially WordPress user credentials. No public exploit code or CISA KEV listing has been identified at the time of analysis, but the vulnerability is straightforward to exploit with valid credentials given the low complexity rating.

SQL Injection in the Groundhogg WordPress CRM plugin (all versions through 4.5.5) allows authenticated attackers holding Sales Representative-level access or above to extract arbitrary data from the underlying WordPress database via the `query[select]` REST API parameter. The vulnerability is exploitable through a deliberate sanitization bypass: submitting an invalid filter type in `query[filters]` triggers a FilterException that silently redirects execution from the protected `Contact_Query` path to the unprotected `Legacy_Contact_Query` path. No CISA KEV listing or confirmed public exploit code exists at time of analysis, though Wordfence's advisory directly references vulnerable source lines at plugin version 4.5.5, materially lowering the barrier to independent PoC development.