Advanced Contact Form 7 <= 1.0.0 - Missing Authorization to Unauthenticated Arbitrary Contact Form Submission Deletion via 'form_id' Parameter
The Advanced Contact Form 7 - Compact DB plugin for WordPress is vulnerable to unauthorized deletion of data due to a missing capability check on the cf7cdb_ajax_delete_user() function in versions up to, and including, 1.0.0. The handler is registered against both wp_ajax_cf7cdb_delete and wp_ajax_nopriv_cf7cdb_delete, and it performs no nonce verification, no capability check, and no ownership check before invoking $wpdb->delete() against the wp_cf7cdb_data table with an attacker-supplied integer ID. This makes it possible for unauthenticated attackers to delete arbitrary contact form submission entries stored by the plugin by iterating sequential primary-key IDs.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Advanced Contact Form 7 – Compact DB | <= 1.0.0 | no fix |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N- Weakness (CWE)
CWE-862- Platform
- WordPress
- Package
Advanced Contact Form 7 – Compact DB- Disclosed
- 23.06.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 3fa5ddd8-8166-45eb-9576-8683c1d12cc6 - Wordfence Intelligence
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Vulnerability history: Advanced Contact Form 7 – Compact DB
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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