# CVE-2026-104408: Groundhogg SQL injection vulnerability

Source: https://junglewise.ai/threats/cve-2026-104408-improper-neutralization-of-special-elements-used-in-an-sql  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-05. Updated: 2026-10-05  
License: CC BY 4.0 with a link back

CVE-2026-104408 · Severity: high · CVSS 7.6 · Published 2026-10-05

Groundhogg is a WordPress plugin used for email marketing automation and customer relationship management. A SQL injection flaw allows attackers with appropriate access to read, modify, or delete the entire website database, including user accounts and sensitive customer information.

Technologies: [Groundhogg](https://junglewise.ai/threats/technologies/groundhogg). Vendors: [Groundhogg](https://junglewise.ai/threats/vendors/groundhogg).

## Quick answers

**Is CVE-2026-104408 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-104408 being exploited in the wild.

**How severe is CVE-2026-104408?** High severity, with a CVSS score of 7.6, published 5 October 2026.

**Which products and versions are affected?** Groundhogg through 4.8.3.

**Is there a fix for CVE-2026-104408?** Yes: fixed in 4.9. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-104408 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-104408?** Check whether you run Groundhogg at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 4.9

## Technical details

A blind SQL injection vulnerability in Groundhogg allows an attacker with a custom role to inject arbitrary SQL commands. The flaw resides in the plugin's database query handling, exploitable via network access with low privileges required. A successful attack enables reading, modifying, or deleting database contents, including user accounts and private data.

## Affected products

- Groundhogg Groundhogg through 4.8.3

## Timeline

- 2026-09-23: disclosed
- 2026-10-05: advisory

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/groundhogg/vulnerability/wordpress-groundhogg-plugin-4-8-3-sql-injection-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/groundhogg/vulnerability/wordpress-groundhogg-plugin-4-8-3-sql-injection-vulnerability?_s_id=cve)

## Related threats

- [Groundhogg privilege escalation via hardcoded support account identifiers](https://junglewise.ai/threats/cve-2026-92975-the-groundhogg-crm-newsletters-and-marketing-automation-plugin)
- [Groundhogg sensitive data exposure](https://junglewise.ai/threats/cve-2026-104385-unauthenticated-sensitive-data-exposure-in-groundhogg-4-8-3)
- [Groundhogg import_contacts path traversal](https://junglewise.ai/threats/cve-2026-85310-groundhogg-import-contacts-path-traversal)
- [Groundhogg open redirect in email preference confirmation](https://junglewise.ai/threats/cve-2026-81741-groundhogg-open-redirect-in-email-preference-confirmation)
- [Adrian Tobey Groundhogg path traversal arbitrary file deletion](https://junglewise.ai/threats/cve-2026-57389-adrian-tobey-groundhogg-path-traversal-arbitrary-file-deletion)