CVE-2026-18387Groundhogg <= 4.5.14 - Authenticated (Vendor+) SQL Injection via 'tag_query' Parameter
Updated under an hour ago ()
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It affects trainingbusinesspros Groundhogg — CRM, Newsletters, and Marketing Automation. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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The Groundhogg — CRM, Newsletters, and Marketing Automation plugin for WordPress is vulnerable to generic SQL Injection via the 'tag_query' parameter in all versions up to, and including, 4.5.14 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 vendor-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. Exploitation requires the attacker to trigger the vulnerable Legacy_Contact_Query code path by submitting an unknown filter type (e.g. filters[0][0][type]=force_fallback), which causes a FilterException that dispatches execution away from the modern query handler.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-89
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
trainingbusinesspros Groundhogg — CRM, Newsletters, and Marketing Automation trainingbusinesspros:groundhogg_crm_newsletters_and_marketing_automation (from the name) | through 4.5.14 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/04881aac-9d3b-48c0-b095-e91797df46e3?source=cve
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.14/includes/tag-query.php#L415
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.14/includes/tag-query.php#L393
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.14/includes/legacy-contact-query.php#L548
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.14/includes/contact-query.php#L2599
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.14/api/v4/contacts-api.php#L230
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.6/includes/tag-query.php#L415
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.6/includes/tag-query.php#L393
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.6/includes/legacy-contact-query.php#L548
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.6/includes/contact-query.php#L2599
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.6/api/v4/contacts-api.php#L230
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3643654%40groundhogg&new=3643654%40groundhogg
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.