CVE-2026-18548
The Groundhogg — CRM, Newsletters, and Marketing Automation plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'ref' parameter in all versions up to, and including, 4.5.14 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Published:Oct 15, 2026
Last Modified:Oct 24, 2026
EPS:Oct 15, 2026
EPSS Score:0.00287
CVSS Score:7.2
Affected Products
Vendor
Product
Action
Vendor
Trainingbusinesspros
Product
Groundhogg — Crm, Newsletters, And Marketing Automation
Trainingbusinesspros
Groundhogg — Crm, Newsletters, And Marketing Automation
Vendor
Wordpress-extensions
Product
Groundhogg
Wordpress-extensions
Groundhogg
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
