ClearSale Total Plugin up to 3.4.2 on WordPress wp_verify_nonce metodo sql injection

Summaryinfo

A vulnerability was found in ClearSale Total Plugin up to 3.4.2 on WordPress. It has been classified as critical. This affects the function wp_verify_nonce. The manipulation of the argument metodo leads to sql injection. This vulnerability is listed as CVE-2026-8705. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in ClearSale Total Plugin up to 3.4.2 on WordPress. This issue affects the function wp_verify_nonce. The manipulation of the argument metodo with an unknown input leads to a sql injection vulnerability. Using CWE to declare the problem leads to CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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 < 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 < 8.0.

The weakness was presented by Catalin Oancea. The advisory is shared at wordfence.com. The identification of this vulnerability is CVE-2026-8705 since 05/15/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1505 for this issue.

Upgrading to version 3.4.2 or 8.0 eliminates this vulnerability.

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Productinfo

Type

• WordPress Plugin

Vendor

• ClearSale

Name

• Total Plugin

Version

• 3.4.0
• 3.4.1
• 3.4.2

CPE 2.3info

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CPE 2.2info

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