CVE-2025-64367: WordPress Groundhogg plugin <= 4.2.6 - Cross Site Scripting (XSS) vulnerability

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-10-31 · updated 2026-06-17
Weakness: CWE-79

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Adrian Tobey Groundhogg groundhogg allows Stored XSS.This issue affects Groundhogg: from n/a through <= 4.2.6.

Affected products

trainingbusinesspros Groundhogg — CRM, Newsletters, and Marketing Automation: through 4.2.6

References

https://patchstack.com/database/Wordpress/Plugin/groundhogg/vulnerability/wordpress-groundhogg-plugin-4-2-6-cross-site-scripting-xss-vulnerability?_s_id=cve

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