Vulnerability CVE-2023-2735
Published: 2023-05-20

Description:
The Groundhogg plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'gh_form' shortcode in versions up to, and including, 2.7.9.8 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Please note this only works with legacy contact forms.

 References:
https://plugins.trac.wordpress.org/changeset/2914493/groundhogg/trunk/includes/better-meta-compat.php
https://www.wordfence.com/threat-intel/vulnerabilities/id/4938206e-2ea4-47ed-a307-87cf67dd74a4?source=cve
https://plugins.trac.wordpress.org/browser/groundhogg/tags/2.7.9.8/includes/shortcodes.php#L51
https://plugins.trac.wordpress.org/browser/groundhogg/tags/2.7.9.8/includes/form/form.php#L187
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