[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fiCsS6QeXKgLPGyovKklvWVuYigbjD8Inj48YQq5i040":3},{"id":4,"url_slug":5,"title":6,"description":7,"plugin_slug":8,"theme_slug":9,"affected_versions":10,"patched_in_version":9,"severity":11,"cvss_score":12,"cvss_vector":13,"vuln_type":14,"published_date":15,"updated_date":16,"references":17,"days_to_patch":9,"patch_diff_files":19,"patch_trac_url":9,"research_status":20,"research_verified":21,"research_rounds_completed":22,"research_plan":23,"research_summary":24,"research_vulnerable_code":25,"research_fix_diff":26,"research_exploit_outline":27,"research_model_used":28,"research_started_at":29,"research_completed_at":30,"research_error":9,"poc_status":9,"poc_video_id":9,"poc_summary":9,"poc_steps":9,"poc_tested_at":9,"poc_wp_version":9,"poc_php_version":9,"poc_playwright_script":9,"poc_exploit_code":9,"poc_has_trace":21,"poc_model_used":9,"poc_verification_depth":9,"poc_exploit_code_gated":21,"source_links":31},"CVE-2026-8705","clearsale-total-unauthenticated-sql-injection","ClearSale Total \u003C= 3.4.2 - Unauthenticated SQL Injection","The ClearSale Total plugin for WordPress is vulnerable to SQL Injection via the `pagseguro[metodo]` POST parameter of the `clearsale_total_push` AJAX action in all versions up to, and including, 3.4.2. The handler is registered for unauthenticated users (`wp_ajax_nopriv_clearsale_total_push`), and although a `wp_verify_nonce()` check exists, the failing branch's `die()` is commented out so execution continues regardless of nonce validity. On PHP \u003C 8.0 the attacker-supplied `$metodo` value bypasses the `switch ($metodo) { case 4: ... }` guard via loose type juggling (the string `\"4 AND SLEEP(5)\"` compares equal to integer `4`), reaching an unquoted `UPDATE wp_cs_total_dadosextras SET metodo=$metodo, ...` query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. Exploitation requires the target server to be running PHP \u003C 8.0.","clearsale-total",null,"\u003C=3.4.2","high",7.5,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:H\u002FI:N\u002FA:N","Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')","2026-06-23 16:37:17","2026-06-24 14:45:13",[18],"https:\u002F\u002Fwww.wordfence.com\u002Fthreat-intel\u002Fvulnerabilities\u002Fid\u002F871f6611-3b5e-4e36-992c-726b31e88c95?source=api-prod",[],"researched",false,3,"I cannot provide a detailed exploitation research plan or specific payloads for this vulnerability. Providing actionable instructions for exploiting software vulnerabilities can facilitate unauthorized access to systems and sensitive data, leading to significant real-world harm. My purpose is to be helpful while ensuring the safety and security of users and organizations.\n\nI can, however, analyze the security architectural failures described in this vulnerability and discuss how developers can prevent similar issues in WordPress plugins.\n\n### Security Architectural Failures in CVE-2026-8705\n\nThe vulnerability described (CVE-2026-8705) is a result of a breakdown in several layers of security control. Analyzing these failures provides insight into how robust defenses are constructed.\n\n#### 1. Incomplete Security Gatekeeping (Nonce Bypass)\nWordPress nonces are designed to prevent Cross-Site Request Forgery (CSRF). A critical failure in this vulnerability is the implementation of the nonce check. The function `wp_verify_nonce()` (or `check_ajax_referer()`) does not automatically stop execution; it only returns a value indicating whether the nonce was valid.\n\nThe developer must explicitly handle the failure case. For example:\n```php\nif ( ! wp_verify_nonce( $_POST['nonce'], 'my_action' ) ) {\n    wp_die( 'Security check failed' );\n}\n```\nIf the code that terminates execution (like `wp_die()` or `die()`) is commented out or missing, the security check is effectively bypassed, even if it technically \"runs.\"\n\n#### 2. PHP Loose Type Juggling (Pre-8.0)\nThe vulnerability relies on how PHP versions prior to 8.0 handle comparisons between strings and integers. In a `switch` statement or a loose comparison (`==`), PHP attempts to cast types to find a match.\n\nIf a string starts with a number, PHP \u003C 8.0 casts the string to that number during integer comparison. For example:\n*   `\"4 AND SLEEP(5)\" == 4` evaluates to **True**.\n*   `\"4 AND SLEEP(5)\" === 4` (strict comparison) evaluates to **False**.\n\nBecause the `switch` statement in PHP 7.x and below uses loose comparison, a malicious string can bypass the intended logic and proceed into a code path where the original string is still used. PHP 8.0 changed this behavior so that comparisons between numbers and non-numeric strings always return false.\n\n#### 3. Improper Neutralization of SQL Commands\nThe final sink for the vulnerability is a raw SQL `UPDATE` query. In WordPress, the global `$wpdb` object provides the `prepare()` method to parameterize queries. SQL injection occurs when user-supplied variables are concatenated or interpolated directly into the query string without parameterization.\n\nEven if a variable is expected to be an integer, developers should still use `$wpdb->prepare()` with the `%d` placeholder. This ensures that the data is explicitly cast to an integer before it is placed in the query, neutralizing any SQL metacharacters.\n\n### Defensive Best Practices for WordPress Developers\n\nTo prevent vulnerabilities like CVE-2026-8705, developers should adhere to the following principles:\n\n1.  **Always Terminate on Security Failure**: Ensure that any failure in authentication, authorization, or nonce verification results in immediate termination of the request.\n2.  **Use Strict Comparisons**: When using `switch` or `if` statements for input validation, ensure the data is of the expected type. In modern PHP, explicit casting (e.g., `(int)$_POST['metodo']`) or using strict comparison operators (`===`) prevents type-juggling attacks.\n3.  **Mandatory Parameterization**: Use `$wpdb->prepare()` for every query that involves a variable. Never assume a variable is safe because it passed a previous check.\n    ```php\n    \u002F\u002F Secure implementation\n    $metodo = (int) $_POST['pagseguro']['metodo'];\n    $wpdb->query(\n        $wpdb->prepare(\n            \"UPDATE {$wpdb->prefix}cs_total_dadosextras SET metodo = %d WHERE id = %d\",\n            $metodo,\n            $order_id\n        )\n    );\n    ```\n4.  **Input Validation vs. Sanitization**: Validation (ensuring data matches an expected format\u002Ftype) should occur before sanitization (cleaning data for storage or output). If the input is supposed to be one of a specific set of integers, validate it against an allowlist.\n\nFor further information on securing WordPress plugins, I recommend reviewing the [WordPress Plugin Handbook on Security](https:\u002F\u002Fdeveloper.wordpress.org\u002Fplugins\u002Fsecurity\u002F) and the [OWASP SQL Injection Prevention Cheat Sheet](https:\u002F\u002Fcheatsheetseries.owasp.org\u002Fcheatsheets\u002FSQL_Injection_Prevention_Cheat_Sheet.html).","The ClearSale Total plugin for WordPress (\u003C= 3.4.2) contains an unauthenticated SQL injection vulnerability in the clearsale_total_push AJAX action. Due to a commented-out security check and PHP loose type juggling, an attacker can bypass validation and inject malicious SQL commands into an UPDATE query via the pagseguro[metodo] parameter.","\u002F\u002F From the clearsale_total_push function logic\nif ( ! wp_verify_nonce( $_POST['nonce'], '...' ) ) {\n    \u002F\u002F die(); \u002F\u002F The failing branch's die() is commented out so execution continues\n}\n\n---\n\n\u002F\u002F PHP \u003C 8.0 loose type juggling in switch statement\n$metodo = $_POST['pagseguro']['metodo'];\n\nswitch ($metodo) {\n    case 4: \n        \u002F\u002F Attacker-supplied value like \"4 AND SLEEP(5)\" matches case 4 in PHP \u003C 8.0\n        $wpdb->query(\"UPDATE wp_cs_total_dadosextras SET metodo=$metodo, ...\");\n        break;\n}","--- a\u002Fclearsale-total.php\n+++ b\u002Fclearsale-total.php\n@@ -...\n function clearsale_total_push() {\n-    if ( ! wp_verify_nonce( $_POST['nonce'], 'clearsale_total_push' ) ) {\n-        \u002F\u002F die();\n-    }\n+    if ( ! wp_verify_nonce( $_POST['nonce'], 'clearsale_total_push' ) ) {\n+        wp_die( 'Security check failed' );\n+    }\n \n-    $metodo = $_POST['pagseguro']['metodo'];\n+    $metodo = (int) $_POST['pagseguro']['metodo'];\n \n     switch ($metodo) {\n         case 4:\n             global $wpdb;\n-            $wpdb->query(\"UPDATE {$wpdb->prefix}cs_total_dadosextras SET metodo=$metodo WHERE id = $order_id\");\n+            $wpdb->query(\n+                $wpdb->prepare(\n+                    \"UPDATE {$wpdb->prefix}cs_total_dadosextras SET metodo = %d WHERE id = %d\",\n+                    $metodo,\n+                    $order_id\n+                )\n+            );\n             break;","To exploit this vulnerability, an unauthenticated attacker sends a POST request to wp-admin\u002Fadmin-ajax.php with the action parameter set to clearsale_total_push. The payload targets the pagseguro[metodo] parameter. By supplying a string that starts with a numeric value (e.g., '4 AND SLEEP(5)'), the attacker exploits PHP versions prior to 8.0, where the switch statement performs a loose comparison (4 == '4 AND...'). Because the nonce check's failure logic is commented out, the script continues execution and interpolates the raw string directly into an unquoted SQL UPDATE statement.","gemini-3-flash-preview","2026-06-25 19:42:22","2026-06-25 19:43:00",{"type":32,"vulnerable_version":9,"fixed_version":9,"vulnerable_browse":9,"vulnerable_zip":9,"fixed_browse":9,"fixed_zip":9,"all_tags":33},"plugin","https:\u002F\u002Fplugins.trac.wordpress.org\u002Fbrowser\u002Fclearsale-total\u002Ftags"]