Unauthenticated SQL Injection in WP Fast Total Search

Executive Summary

CVE-2026-57683 is an unauthenticated SQL Injection vulnerability found in the WordPress WP Fast Total Search Plugin versions 1.80.280 and below.

This flaw allows attackers to directly interact with the website's database without needing any prior access or authentication.

It is classified under the OWASP Top 10 A3: Injection category and is considered highly dangerous due to its critical severity score of 9.3.

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Detection Guidance

The vulnerability is an unauthenticated SQL Injection in the WP Fast Total Search plugin versions 1.80.280 and below. Detection typically involves checking the plugin version and monitoring for suspicious SQL injection attempts targeting this plugin.

To detect if your system is vulnerable, first verify the plugin version installed on your WordPress site. If it is version 1.80.280 or below, it is vulnerable.

You can use commands to check the plugin version via the command line if you have access to the WordPress installation directory. For example:

• Navigate to the plugins directory: cd /path/to/wordpress/wp-content/plugins/wp-fast-total-search
• Check the version in the plugin's main PHP file or readme: grep 'Version' wp-fast-total-search.php

For network detection, monitor HTTP requests for suspicious SQL injection patterns targeting the plugin's endpoints. You can use tools like grep or network intrusion detection systems (NIDS) with rules to detect SQL injection payloads.

Patchstack provides a mitigation rule to block attacks until the plugin is updated, which can be integrated into web application firewalls (WAF) or intrusion prevention systems (IPS).

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Impact Analysis

This vulnerability can have severe impacts including unauthorized access to sensitive information stored in the website's database.

Because it is unauthenticated, attackers can exploit it remotely without any credentials.

The vulnerability's critical severity and high likelihood of exploitation in mass campaigns mean that many websites using the affected plugin are at risk of data theft or manipulation.

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Compliance Impact

The vulnerability allows unauthenticated attackers to perform SQL Injection attacks, potentially stealing sensitive information from the website's database.

Such unauthorized access and data theft could lead to non-compliance with data protection regulations like GDPR and HIPAA, which require safeguarding sensitive personal and health information.

Failure to protect against this vulnerability may result in data breaches, exposing organizations to legal and regulatory penalties under these standards.

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Mitigation Strategies

The vulnerability affects WP Fast Total Search Plugin versions 1.80.280 and below and allows unauthenticated SQL Injection.

Immediate mitigation steps include updating the plugin to version 1.81.282 or later, which contains the patch for this issue.

Until the update can be applied, users are advised to implement the mitigation rule provided by Patchstack to block attacks targeting this vulnerability.

If needed, seek assistance from your hosting provider or web developer to apply these mitigations.

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