CVE-2025-24759: WP-BusinessDirectory SQLi Vulnerability

CVE-2025-24759 Overview

CVE-2025-24759 is a critical Blind SQL Injection vulnerability affecting the WP-BusinessDirectory WordPress plugin developed by CMSJunkie. This vulnerability allows unauthenticated attackers to inject malicious SQL commands through improperly sanitized user input, potentially leading to unauthorized access to sensitive database information. The vulnerability impacts all versions of WP-BusinessDirectory through version 3.1.3.

Critical Impact

Unauthenticated attackers can exploit this Blind SQL Injection vulnerability to extract sensitive data from the WordPress database, including user credentials, business listings, and potentially administrative information.

Affected Products

• WP-BusinessDirectory plugin versions up to and including 3.1.3
• WordPress installations using the affected WP-BusinessDirectory plugin
• CMSJunkie WordPress Business Directory Plugins

Discovery Timeline

• 2025-07-16 - CVE-2025-24759 published to NVD
• 2025-07-16 - Last updated in NVD database

Technical Details for CVE-2025-24759

Vulnerability Analysis

This vulnerability is classified as CWE-89 (Improper Neutralization of Special Elements used in an SQL Command). The WP-BusinessDirectory plugin fails to properly sanitize user-supplied input before incorporating it into SQL queries. This allows attackers to manipulate the database through carefully crafted input that alters the intended SQL command structure.

The Blind SQL Injection nature of this vulnerability means that while attackers cannot directly view query results in the application's response, they can infer information by observing differences in application behavior (time-based or boolean-based techniques). This makes exploitation more subtle but no less dangerous, as attackers can methodically extract entire database contents.

The network-accessible attack vector with no authentication requirements significantly increases the risk exposure for affected WordPress installations. Attackers can remotely exploit this vulnerability without any user interaction or prior authentication.

Root Cause

The root cause of this vulnerability lies in the improper neutralization of special SQL characters in user input processed by the WP-BusinessDirectory plugin. The plugin fails to implement proper input validation, prepared statements, or parameterized queries when constructing SQL commands. This allows SQL metacharacters such as single quotes, double dashes, and semicolons to be interpreted as SQL syntax rather than literal data.

Attack Vector

The attack vector is network-based, requiring no authentication or user interaction. An attacker can exploit this vulnerability by sending specially crafted HTTP requests to a WordPress site running the vulnerable WP-BusinessDirectory plugin. The malicious input is processed by the plugin and incorporated into SQL queries without proper sanitization.

Blind SQL Injection techniques typically involve:

• Boolean-based exploitation: Injecting conditional statements that alter query results, allowing attackers to infer true/false conditions based on page behavior
• Time-based exploitation: Injecting SQL commands that cause deliberate delays (e.g., SLEEP() or BENCHMARK()), allowing attackers to extract data bit by bit based on response timing

The vulnerability does not require any privileged access, making it exploitable by any remote attacker who can reach the WordPress installation over the network.

Detection Methods for CVE-2025-24759

Indicators of Compromise

• Unusual SQL error messages appearing in WordPress logs or debug output
• Abnormal database query patterns or increased query execution times
• Unexpected database access or data exfiltration attempts in web server logs
• HTTP requests containing SQL injection payloads targeting WP-BusinessDirectory plugin endpoints

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns in HTTP requests
• Monitor web server access logs for requests containing SQL metacharacters (', --, ;, UNION, SELECT, SLEEP)
• Enable WordPress database query logging and analyze for anomalous query structures
• Deploy intrusion detection systems (IDS) with SQL injection signature detection capabilities

Monitoring Recommendations

• Configure real-time alerting for suspicious database activity patterns
• Monitor response times for endpoints associated with the WP-BusinessDirectory plugin to detect time-based attacks
• Implement database activity monitoring to track queries executed against sensitive tables
• Review WordPress security plugins for SQL injection detection capabilities

How to Mitigate CVE-2025-24759

Immediate Actions Required

• Update the WP-BusinessDirectory plugin immediately when a patched version becomes available
• Consider temporarily disabling the WP-BusinessDirectory plugin until a security patch is released
• Implement a Web Application Firewall (WAF) with SQL injection protection rules
• Restrict database user privileges for the WordPress installation to minimum required permissions

Patch Information

Review the Patchstack Vulnerability Report for the latest patch status and update information from CMSJunkie. Website administrators should monitor for plugin updates through the WordPress admin dashboard and apply security patches as soon as they become available.

Workarounds

• Deploy a WAF configured to block SQL injection attempts targeting WordPress plugins
• Implement input validation at the server level using security plugins such as Wordfence or Sucuri
• Restrict access to the WordPress installation using IP allowlisting if possible
• Consider using a virtual patching solution to protect against the vulnerability until an official patch is available
• Regularly backup your WordPress database to enable recovery in case of successful exploitation