CVE-2025-54053: WordPress Groundhogg plugin <= 4.2.2 - PHP Object Injection vulnerability

Severity: medium (CVSS 6.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-08-20 · updated 2026-06-17
Weakness: CWE-502

Description

Deserialization of Untrusted Data vulnerability in Adrian Tobey Groundhogg groundhogg allows Object Injection.This issue affects Groundhogg: from n/a through <= 4.2.2.

Affected products

trainingbusinesspros Groundhogg — CRM, Newsletters, and Marketing Automation: through 4.2.2

References

https://patchstack.com/database/Wordpress/Plugin/groundhogg/vulnerability/wordpress-groundhogg-4-2-2-php-object-injection-vulnerability?_s_id=cve

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