CVE-2026-18387: CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') in trainingbusinesspros Groundhogg — CRM, Newsletters, and Marketing Automation
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.
AI Analysis
Technical Summary
CVE-2026-18387 is an SQL Injection vulnerability in the Groundhogg WordPress plugin (CRM, Newsletters, and Marketing Automation) affecting all versions up to 4.5.14. The flaw exists due to improper neutralization of special elements in the 'tag_query' parameter, allowing authenticated attackers with vendor-level privileges or higher to inject additional SQL queries. Exploitation depends on triggering the Legacy_Contact_Query code path by submitting an unknown filter type, causing a FilterException that diverts execution from the secure query handler to a vulnerable legacy handler. This enables extraction of sensitive database information without impacting availability or integrity.
Potential Impact
An attacker with vendor-level or higher authenticated access can exploit this vulnerability to extract sensitive information from the database by injecting additional SQL queries. The vulnerability does not affect system availability or data integrity but compromises confidentiality. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch link is provided, users should monitor vendor communications for updates. Until a patch is available, restrict vendor-level access and carefully validate inputs to the 'tag_query' parameter if possible.
CVE-2026-18387: CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') in trainingbusinesspros Groundhogg — CRM, Newsletters, and Marketing Automation
Description
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.
CVSS v3.1
Score 6.5medium
Affected software
trainingbusinesspros
Groundhogg — CRM, Newsletters, and Marketing Automation
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18387 is an SQL Injection vulnerability in the Groundhogg WordPress plugin (CRM, Newsletters, and Marketing Automation) affecting all versions up to 4.5.14. The flaw exists due to improper neutralization of special elements in the 'tag_query' parameter, allowing authenticated attackers with vendor-level privileges or higher to inject additional SQL queries. Exploitation depends on triggering the Legacy_Contact_Query code path by submitting an unknown filter type, causing a FilterException that diverts execution from the secure query handler to a vulnerable legacy handler. This enables extraction of sensitive database information without impacting availability or integrity.
Potential Impact
An attacker with vendor-level or higher authenticated access can exploit this vulnerability to extract sensitive information from the database by injecting additional SQL queries. The vulnerability does not affect system availability or data integrity but compromises confidentiality. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch link is provided, users should monitor vendor communications for updates. Until a patch is available, restrict vendor-level access and carefully validate inputs to the 'tag_query' parameter if possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-07-30T13:00:58.261Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7fe005bf8831d5395c16a3
Added to database: 08/15/2026, 03:41:57 UTC
Last enriched: 08/22/2026, 13:14:52 UTC
Last updated: 09/29/2026, 18:11:17 UTC
Views: 79
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