CVE-2026-18387
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk33th percentile - higher than 33% of all known CVEs
Summary
The Groundhogg plugin for WordPress up to version 4.5.14 is vulnerable to SQL injection via the tag_query parameter. Insufficient escaping and lack of query preparation allow authenticated attackers with vendor-level access to append additional SQL queries, potentially extracting sensitive information. Exploitation requires triggering the Legacy_Contact_Query code path via an unknown filter type.
Risk Assessment
An attacker with limited privileges can access database data, including customer data and passwords.
Recommendation
Update the Groundhogg plugin to the latest patched version. Restrict vendor-level access to trusted users only.
Original NVD description (English source)
The Groundhogg — CRM, Newsletters, and Marketing Automation plugin for WordPress is vulnerable to generic SQL Injection via the 'tag_query' parameter in all versions up to, and including, 4.5.14 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with vendor-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. Exploitation requires the attacker to trigger the vulnerable Legacy_Contact_Query code path by submitting an unknown filter type (e.g. filters[0][0][type]=force_fallback), which causes a FilterException that dispatches execution away from the modern query handler.