CVE-2025-2107: WordPress ViralAd Plugin SQLi Vulnerability

CVE-2025-2107 Overview

CVE-2025-2107 is a SQL Injection vulnerability affecting the ArielBrailovsky-ViralAd plugin for WordPress. The vulnerability exists in the printResultAndDie() function, where the id parameter fails to properly escape user-supplied input before incorporating it into SQL queries. This allows unauthenticated attackers to manipulate database queries and extract sensitive information.

Critical Impact

Unauthenticated attackers can exploit this SQL Injection vulnerability to extract sensitive data from WordPress databases, potentially compromising user credentials, content, and site configuration. The vulnerability is particularly dangerous as it requires no authentication to exploit.

Affected Products

• ArielBrailovsky-ViralAd plugin for WordPress versions up to and including 1.0.8
• WordPress installations running the vulnerable plugin (particularly older WordPress versions)

Discovery Timeline

• 2025-03-13 - CVE-2025-2107 published to NVD
• 2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-2107

Vulnerability Analysis

This SQL Injection vulnerability is classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command). The root cause lies in insufficient input sanitization within the printResultAndDie() function located in the plugin's inc/anuncio.php file. The function accepts an id parameter directly from user input and incorporates it into SQL queries without proper escaping or parameterized query preparation.

The vulnerability allows unauthenticated attackers to append malicious SQL statements to existing database queries. Successful exploitation enables extraction of sensitive information from the WordPress database, including user credentials, email addresses, post content, and potentially other plugins' data stored in the same database.

According to the vulnerability disclosure, this issue appears to be most exploitable on older versions of WordPress, suggesting that newer WordPress core versions may have additional security measures that partially mitigate the attack surface.

Root Cause

The vulnerability stems from two compounding issues: insufficient escaping of user-supplied input in the id parameter, and the absence of prepared statements for the SQL query in question. The vulnerable code directly concatenates user input into the SQL query string rather than using WordPress's built-in $wpdb->prepare() function, which would properly sanitize inputs.

Attack Vector

The attack is network-based and requires no authentication or user interaction. An attacker can craft malicious HTTP requests containing SQL injection payloads in the id parameter. The vulnerable printResultAndDie() function processes this input and executes the modified SQL query against the WordPress database, returning the results to the attacker.

The vulnerability can be exploited through standard SQL injection techniques such as UNION-based injection to extract data from other database tables, or boolean-based and time-based blind injection if direct output is not available.

For technical details on the vulnerable code, refer to the WordPress Plugin Code Review at line 105 of the anuncio.php file.

Detection Methods for CVE-2025-2107

Indicators of Compromise

• Unusual or malformed requests to WordPress endpoints containing SQL syntax characters (', ", --, UNION, SELECT) in the id parameter
• Database error messages in web server logs indicating SQL syntax errors
• Unexpected database queries in MySQL slow query logs or general query logs
• Web application firewall (WAF) alerts for SQL injection patterns

Detection Strategies

• Implement SQL injection detection rules in web application firewalls targeting the ArielBrailovsky-ViralAd plugin endpoints
• Monitor web server access logs for requests containing encoded or plaintext SQL keywords in query parameters
• Enable WordPress database query logging to identify anomalous query patterns
• Deploy intrusion detection systems with signatures for common SQL injection payloads

Monitoring Recommendations

• Configure real-time alerting for SQL injection patterns in WAF and IDS systems
• Review database access patterns for queries returning large result sets or accessing sensitive tables
• Monitor for failed login attempts following potential credential extraction attacks
• Implement log aggregation and correlation to identify attack campaigns targeting multiple WordPress installations

How to Mitigate CVE-2025-2107

Immediate Actions Required

• Deactivate and remove the ArielBrailovsky-ViralAd plugin from all WordPress installations immediately
• Audit database access logs for signs of prior exploitation
• If exploitation is suspected, reset all WordPress user passwords and review database content for unauthorized modifications
• Consider implementing a web application firewall to block SQL injection attempts while remediation is in progress

Patch Information

As of the last update, versions up to and including 1.0.8 of the ArielBrailovsky-ViralAd plugin are vulnerable. Users should check the WordPress Plugin Directory for any updated versions that address this vulnerability. If no patched version is available, complete removal of the plugin is recommended.

Additional vulnerability details and remediation guidance can be found in the Wordfence Vulnerability Report.

Workarounds

• Remove or deactivate the ArielBrailovsky-ViralAd plugin entirely until a patched version is released
• Implement web application firewall rules to block requests containing SQL injection patterns targeting the plugin's endpoints
• Restrict access to the WordPress admin area and plugin functions using IP-based allow lists where possible
• Consider using a WordPress security plugin that provides virtual patching capabilities for known vulnerabilities

# WordPress CLI command to deactivate the vulnerable plugin
wp plugin deactivate arielbrailovsky-viralad

# Verify plugin is deactivated
wp plugin list --status=inactive | grep arielbrailovsky-viralad

# Optional: Remove the plugin completely
wp plugin delete arielbrailovsky-viralad