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Vulnerability record · CVE-2026-81660 · published 30 August 2026

CVE-2026-81660: Cross-site scripting vulnerability

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.

8.8 CVSS 3.1 High EPSS 0.51% · top 59.3% CWE-79 · Cross-site scripting Deferred
8.8CVSS 3.1 base score
0.51%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
31 Aug 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

LinkTags
https://wpscan.com/vulnerability/cfdb4107-6010-4c29-baf3-3111765f48c2/

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Source: NIST National Vulnerability Database (record CVE-2026-81660), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.