SQL Injection Vulnerability in Groundhogg CRM Plugin for WordPress
CVE-2026-18387

6.5MEDIUM

Key Information:

Vendor

WordPress
Status
Groundhogg — Crm, Newsletters, And Marketing Automation
Vendor
CVE Published:
15 August 2026

What is CVE-2026-18387?

The Groundhogg plugin for WordPress suffers from a SQL injection vulnerability due to insufficient input escaping in the 'tag_query' parameter. This flaw allows authenticated attackers with vendor-level access to introduce malicious SQL queries, which can extract sensitive database information. Exploitation occurs when the attacker leverages a specific filter type to trigger the vulnerable Legacy_Contact_Query code path, leading execution away from the intended query handler and facilitating unauthorized data access.

Affected Version(s)

Groundhogg — CRM, Newsletters, and Marketing Automation 0 <= 4.5.14

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/groundhogg/tag...
https://plugins.trac.wordpress.org/browser/groundhogg/tag...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jonathan Dersch
.