WP Review Slider Pro Plugin up to 12.7.2 on WordPress Shortcode sanitize_text_field notinstring sql injection

Summaryinfo

A vulnerability labeled as critical has been found in WP Review Slider Pro Plugin up to 12.7.2 on WordPress. Affected by this vulnerability is the function sanitize_text_field of the component Shortcode Handler. Executing a manipulation of the argument notinstring can lead to sql injection. This vulnerability is handled as CVE-2026-8441. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in WP Review Slider Pro Plugin up to 12.7.2 on WordPress and classified as critical. This vulnerability affects the function sanitize_text_field of the component Shortcode Handler. The manipulation of the argument notinstring with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The WP Review Slider Pro plugin for WordPress is vulnerable to SQL Injection via the 'notinstring' parameter of the wprp_load_more_revs AJAX action in versions up to, and including, 12.7.2. The parameter is read via $_POST['notinstring'] and passed through sanitize_text_field() — which strips HTML and whitespace but does not provide SQL safety. The value is then concatenated directly into a numeric/unquoted `AND id NOT IN (...)` clause and executed via $wpdb->get_results() without $wpdb->prepare() or intval() casting. Because the value sits in an unquoted numeric context, WordPress's wp_magic_quotes protection (which only escapes embedded quotes) is ineffective. The AJAX hook is registered via wp_ajax_nopriv_wprp_load_more_revs, and the required check_ajax_referer nonce is publicly available via wp_localize_script on any frontend page that renders the plugin shortcode, so an unauthenticated attacker who can reach a public page hosting the plugin can extract arbitrary data from the database via blind/time-based injection.

The weakness was released by h0xilo. The advisory is available at wordfence.com. This vulnerability was named CVE-2026-8441 since 05/12/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/02/2026). This vulnerability is assigned to T1505 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-41274). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Feedback Software

Name

• WP Review Slider Pro Plugin

Version

• 12.7.0
• 12.7.1
• 12.7.2

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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