WP Review Slider Pro Plugin up to 12.6.8 on WordPress stripslashes wpdb sql injection

Summaryinfo

A vulnerability classified as critical was found in WP Review Slider Pro Plugin up to 12.6.8 on WordPress. This affects the function stripslashes. Such manipulation of the argument wpdb leads to sql injection. This vulnerability is uniquely identified as CVE-2026-8443. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in WP Review Slider Pro Plugin up to 12.6.8 on WordPress. Affected by this issue is the function stripslashes. The manipulation of the argument wpdb 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. CVE summarizes:

The WP Review Slider Pro plugin for WordPress is vulnerable to SQL Injection via the 'stypes' and 'slocations' parameters of the wppro_get_overall_chart_data AJAX action in versions up to, and including, 12.6.8. This is due to the use of stripslashes() on user-supplied JSON strings prior to json_decode(), which removes the escaping applied by WordPress's wp_magic_quotes; the resulting decoded array values are then concatenated directly into SQL WHERE clauses without parameterization, and the constructed query is executed via $wpdb->get_results() without $wpdb->prepare(). This makes it possible for authenticated attackers, with Subscriber-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. The handler also returns the executed SQL string in its JSON response, which simplifies oracle construction for blind exploitation.

The weakness was disclosed by Phú. The advisory is shared for download at wordfence.com. This vulnerability is handled as CVE-2026-8443 since 05/12/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 06/16/2026). The MITRE ATT&CK project declares the attack technique as T1505.

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-2026-37037). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Feedback Software

Name

• WP Review Slider Pro Plugin

Version

• 12.6.0
• 12.6.1
• 12.6.2
• 12.6.3
• 12.6.4
• 12.6.5
• 12.6.6
• 12.6.7
• 12.6.8

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Once again VulDB remains the best source for vulnerability data.

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