WP Review Slider Pro <= 12.7.2 - Unauthenticated SQL Injection via 'notinstring' Parameter

7.5
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CVE CVE-2026-8441
CVSS 7.5 (High)
Publicly Published July 1, 2026
Last Updated July 2, 2026
Researcher h0xilo

Description

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.

Learn more about SQL Injection vulnerabilities and how to prevent them.

References

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Vulnerability Details for WP Review Slider Pro

Software Type Plugin
Software Slug wp-review-slider-pro
Patched? Yes
Remediation Update to version 12.7.3, or a newer patched version
Affected Version
  • <= 12.7.2
Patched Version
  • 12.7.3

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