CVE-2026-81660

Groundhogg < 4.5.13 - Unauthenticated Stored XSS via Web Form Dropdown/Radio Field

Published Aug 30, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
The Groundhogg — CRM, Newsletters, and Marketing Automation WordPress plugin before 4.5.13 does not validate or escape values submitted to some optional web form fields before storing them and outputting them back in an administrative area, allowing unauthenticated users to perform Stored Cross-Site Scripting attacks against high privilege users.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Weaknesses CWE-79
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Groundhogg
Groundhogg groundhogg
Wordpress
Wordpress wordpress
Vendors & Products Groundhogg
Groundhogg groundhogg
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Description The Groundhogg — CRM, Newsletters, and Marketing Automation WordPress plugin before 4.5.13 does not validate or escape values submitted to some optional web form fields before storing them and outputting them back in an administrative area, allowing unauthenticated users to perform Stored Cross-Site Scripting attacks against high privilege users.
Title Groundhogg < 4.5.13 - Unauthenticated Stored XSS via Web Form Dropdown/Radio Field
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Aug 31, 2026, 12:38 PM
Reserved
Aug 27, 2026, 10:06 AM
Status
Deferred
Published
Aug 30, 2026, 7:17 AM
Modified
Aug 31, 2026, 8:14 PM