CVE-2026-81660
High
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.
SeverityHigh
CVSS8.8
Exploit probability—
ProductGroundhogg — CRM, Newsletters, and Marketing Automation
PublishedAug 30, 2026
First seenAug 30, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- Groundhogg — CRM, Newsletters, and Marketing Automation4.5.13 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Groundhogg — CRM, Newsletters, and Marketing Automation | v < 4.5.13 | 4.5.13 |
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