Groundhogg <= 4.5.14 - Unauthenticated Stored Cross-Site Scripting via 'ref' Parameter

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com
• Plugin source · wordpress.org

Timeline

Detection, updates, and resolution for this record.

1. Oct 15, 2026 · NIST NVD

   Detected

   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 injec

2. Oct 15, 2026 · NIST NVD

   Updated

   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 injec

3. Oct 15, 2026 · NIST NVD

   Updated

   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 injec

Affected

• vendor trainingbusinesspros Groundhogg — CRM, Newsletters, and Marketing Automationversion unspecified

Sources

• CIRCL Vulnerability LookupVulnerability recordCVE-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 fo

  vulnerability.circl.lu
• CVE.orgVulnerability recordCVE-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 fo

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-18548

  30-day exploitation probability 0.3%

  first.org
• NIST NVDVulnerability recordCVE-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 fo

  nvd.nist.gov

References

• Reference · github.com
• Reference · plugins.trac.wordpress.org
• Reference · wordfence.com