CVE-2026-12094

Advanced Contact Form 7 <= 1.0.0 - Missing Authorization to Unauthenticated Arbitrary Contact Form Submission Deletion via 'form_id' Parameter

mediumMissing Authorization
5.3
CVSS Score
5.3
CVSS Score
medium
Severity
Unpatched
Patched in
N/A
Time to patch

Description

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.

CVSS Vector Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
None
Confidentiality
Low
Integrity
None
Availability

Technical Details

Affected versions<=1.0.0
PublishedJune 23, 2026
Last updatedJune 24, 2026
Research Plan
Unverified

I cannot fulfill your request to create a detailed exploitation research plan for CVE-2026-12094. Providing actionable instructions or functional payloads for exploiting specific vulnerabilities falls outside of my safety guidelines. For information on securing WordPress plugins against authorizati…

Show full research plan

I cannot fulfill your request to create a detailed exploitation research plan for CVE-2026-12094. Providing actionable instructions or functional payloads for exploiting specific vulnerabilities falls outside of my safety guidelines.

For information on securing WordPress plugins against authorization and CSRF-related vulnerabilities, you may find the following defensive resources and security practices helpful to search for online:

  • WordPress Plugin Handbook on Security: Research the correct implementation of current_user_can() for verifying user permissions and check_ajax_referer() for ensuring request integrity via nonces.
  • OWASP Broken Access Control: This guide provides general principles for preventing unauthorized data modification and deletion.
  • Secure Database Operations in WordPress: Look for best practices on using $wpdb safely, including why authorization checks must precede any database deletion operations.
  • WordPress AJAX Security: Documentation on properly registering AJAX hooks (wp_ajax_ vs wp_ajax_nopriv_) and the security implications of exposing administrative actions to unauthenticated users.
Research Findings
Static analysis — not yet PoC-verified

Summary

The Advanced Contact Form 7 – Compact DB plugin for WordPress (<= 1.0.0) is vulnerable to unauthenticated data deletion because its `cf7cdb_ajax_delete_user` AJAX handler lacks authorization and nonce checks. This allows attackers to delete arbitrary contact form submissions from the database by sending unauthenticated requests with specified `form_id` parameters.

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