CVE-2025-52832: NGG Smart Image Search SQLi Vulnerability

CVE-2025-52832 Overview

CVE-2025-52832 is a critical SQL Injection vulnerability affecting the NGG Smart Image Search WordPress plugin developed by wpo-HR. The vulnerability stems from improper neutralization of special elements used in SQL commands, allowing unauthenticated attackers to inject malicious SQL queries and potentially compromise the underlying database.

This SQL Injection flaw (CWE-89) enables attackers to manipulate database queries through the plugin's image search functionality. Due to insufficient input sanitization, user-supplied data is directly incorporated into SQL statements without proper escaping or parameterization, creating a direct path for database exploitation.

Critical Impact

Unauthenticated SQL Injection allows attackers to extract sensitive data from WordPress databases, including user credentials, personal information, and potentially gain administrative access to affected WordPress installations.

Affected Products

• NGG Smart Image Search plugin versions up to and including 3.4.1
• WordPress installations using vulnerable NGG Smart Image Search versions
• NextGEN Gallery users utilizing the Smart Image Search extension

Discovery Timeline

• 2025-07-04 - CVE-2025-52832 published to NVD
• 2025-07-08 - Last updated in NVD database

Technical Details for CVE-2025-52832

Vulnerability Analysis

The NGG Smart Image Search plugin fails to properly sanitize user input before incorporating it into SQL queries. This classic SQL Injection vulnerability occurs when the plugin processes search parameters without adequate validation or parameterized query implementation.

The vulnerability is exploitable over the network without requiring any authentication or user interaction. An attacker can craft malicious requests containing SQL injection payloads that will be executed in the context of the WordPress database. The scope is changed, meaning the vulnerability can impact resources beyond the vulnerable component itself, potentially affecting the entire WordPress installation and any co-hosted applications sharing the database.

The primary impact is high confidentiality compromise, allowing attackers to extract sensitive database contents. Additionally, there is a low availability impact, potentially enabling denial of service conditions through resource-intensive queries.

Root Cause

The root cause is insufficient input validation and lack of prepared statements or parameterized queries in the plugin's search functionality. The NGG Smart Image Search plugin directly concatenates user-supplied search parameters into SQL query strings, violating fundamental secure coding practices for database interactions.

WordPress provides the $wpdb->prepare() method specifically to prevent SQL injection by properly escaping and parameterizing queries. The vulnerable plugin versions fail to utilize this protection mechanism, leaving the search functionality exposed to injection attacks.

Attack Vector

The vulnerability is exploitable via network requests to the WordPress site. An attacker can submit specially crafted search queries through the plugin's image search interface. Since the vulnerability requires no authentication and no user interaction, it can be exploited by any remote attacker who can reach the WordPress installation.

Common exploitation techniques for this type of SQL Injection include:

The vulnerability manifests in the image search functionality where user input is processed without proper sanitization. Attackers can leverage SQL injection payloads to perform UNION-based attacks for data extraction, Boolean-based blind injection for incremental data retrieval, or time-based blind injection to infer database contents. For technical details and proof-of-concept information, refer to the Patchstack vulnerability database entry.

Detection Methods for CVE-2025-52832

Indicators of Compromise

• Unusual or malformed search queries in web server access logs containing SQL syntax such as UNION SELECT, OR 1=1, or comment sequences like -- and /*
• Database error messages appearing in application logs indicating query syntax errors or unexpected SQL commands
• Unexpected database queries or connections from the web application, particularly SELECT statements against sensitive tables like wp_users
• Evidence of data exfiltration or unusual outbound traffic following search functionality usage

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block common SQL injection patterns in request parameters
• Monitor WordPress and web server logs for suspicious search queries containing SQL keywords, escape characters, or injection payloads
• Deploy runtime application self-protection (RASP) solutions to detect SQL injection attempts at the application layer
• Use database activity monitoring to identify anomalous query patterns or unauthorized data access attempts

Monitoring Recommendations

• Enable detailed logging for the NGG Smart Image Search plugin and WordPress database queries
• Configure alerting for SQL syntax errors or database exception conditions that may indicate injection attempts
• Implement file integrity monitoring on WordPress plugin directories to detect unauthorized modifications
• Regularly audit database access patterns and user account activities for signs of compromise

How to Mitigate CVE-2025-52832

Immediate Actions Required

• Update NGG Smart Image Search plugin to a patched version immediately if one is available
• If no patch is available, deactivate and remove the NGG Smart Image Search plugin until a security update is released
• Implement WAF rules to block SQL injection attempts targeting the plugin's search functionality
• Review database access logs for any signs of prior exploitation and conduct incident response if compromise is detected

Patch Information

Consult the Patchstack security advisory for the latest patch status and update instructions. All versions through 3.4.1 are confirmed vulnerable. WordPress administrators should check for updates through the WordPress dashboard or contact the plugin developer directly for remediation guidance.

Workarounds

• Temporarily disable the NGG Smart Image Search plugin until a patch is available
• Implement strict input validation at the web server or WAF level to sanitize search parameters
• Restrict access to WordPress admin and plugin functionality to trusted IP addresses only
• Consider using an alternative image search solution that has undergone security auditing

# Disable vulnerable plugin via WP-CLI
wp plugin deactivate ngg-smart-image-search

# Verify plugin is deactivated
wp plugin list --status=inactive | grep ngg-smart-image-search

# Check for available updates
wp plugin update --all --dry-run