# CVE-2026-18594: Advanced Contact form 7 DB authorization bypass

Source: https://junglewise.ai/threats/cve-2026-18594-advanced-contact-form-7-db-authorization-bypass  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-10. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-18594 · Severity: medium · CVSS 4.3 · Published 2026-09-10

The Advanced Contact form 7 DB plugin for WordPress fails to properly authorize user actions before allowing CSV imports. An authenticated attacker with lower privilege levels (custom-level access or higher) could import forged contact form submissions into any Contact Form 7 form, potentially corrupting business records, creating false leads, or manipulating form data used in business operations.

## Quick answers

**Is CVE-2026-18594 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-18594 being exploited in the wild.

**How severe is CVE-2026-18594?** Medium severity, with a CVSS score of 4.3, published 10 September 2026.

**Which products and versions are affected?** WordPress Plugin Developers Advanced Contact form 7 DB up to and including 2.1.3.

**Is there a fix for CVE-2026-18594?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-18594 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-18594?** Check whether anything you run is named in the advisory. 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.

## Technical details

This vulnerability is an authorization bypass (CWE-639) in the CSV import functionality of the Advanced Contact form 7 DB plugin. The plugin fails to properly verify user permissions before processing CSV uploads in the import_cf7_csv.php and import_cf7_entry.class.php files. An authenticated attacker with custom-level access or higher can bypass authorization checks and inject arbitrary submission records into any Contact Form 7 form. The vulnerability requires authentication and valid plugin access but does not require administrative privileges. Patches are available in versions above 2.1.3.

## Affected products

- WordPress Plugin Developers Advanced Contact form 7 DB up to and including 2.1.3

## Timeline

- 2026-09-10: disclosed

## References

- [https://plugins.trac.wordpress.org/browser/advanced-cf7-db/tags/2.1.3/admin/partials/import_cf7_csv.php](https://plugins.trac.wordpress.org/browser/advanced-cf7-db/tags/2.1.3/admin/partials/import_cf7_csv.php)
- [https://plugins.trac.wordpress.org/browser/advanced-cf7-db/tags/2.1.3/admin/partials/import_cf7_entry.class.php](https://plugins.trac.wordpress.org/browser/advanced-cf7-db/tags/2.1.3/admin/partials/import_cf7_entry.class.php)