CVE-2025-67987: Quiz And Survey Master SQLi Vulnerability

CVE-2025-67987 Overview

CVE-2025-67987 is a SQL Injection vulnerability affecting the Quiz And Survey Master WordPress plugin (quiz-master-next) developed by ExpressTech Systems. This vulnerability allows authenticated attackers to inject malicious SQL commands through improperly sanitized input, potentially compromising the confidentiality of sensitive database information and causing limited availability impact.

Critical Impact

Authenticated attackers can exploit this SQL Injection vulnerability to extract sensitive data from the WordPress database, including user credentials, quiz submissions, and other confidential information stored by the plugin.

Affected Products

• Quiz And Survey Master plugin version 10.3.1 and earlier
• WordPress installations running vulnerable versions of quiz-master-next
• All WordPress sites using ExpressTech Systems Quiz And Survey Master through version 10.3.1

Discovery Timeline

• 2026-02-20 - CVE CVE-2025-67987 published to NVD
• 2026-02-24 - Last updated in NVD database

Technical Details for CVE-2025-67987

Vulnerability Analysis

This SQL Injection vulnerability (CWE-89) exists due to improper neutralization of special elements used in SQL commands within the Quiz And Survey Master plugin. The vulnerability can be exploited over the network and requires low-privilege authentication, making it accessible to any authenticated WordPress user. The attack does not require user interaction and has the potential to affect resources beyond the vulnerable component's security scope.

The exploitation of this vulnerability primarily impacts data confidentiality, allowing attackers to read sensitive information from the database that they should not have access to. Additionally, there is a limited impact on system availability.

Root Cause

The root cause of this vulnerability is inadequate input validation and sanitization within the Quiz And Survey Master plugin. User-supplied input is being incorporated into SQL queries without proper escaping or parameterized queries, allowing attackers to manipulate the SQL statement logic and access unauthorized data.

Attack Vector

The attack is network-based, requiring the attacker to have at least low-level authentication to the WordPress site. Once authenticated, the attacker can craft malicious input containing SQL syntax that gets executed by the database server. The vulnerability allows cross-scope impact, meaning the attacker can potentially access data from other database tables or components beyond the plugin's intended scope.

The SQL Injection attack typically involves inserting malicious SQL fragments into input fields processed by the plugin. These fragments can include UNION-based attacks to extract data from other tables, boolean-based blind injection to infer database contents, or time-based techniques to exfiltrate information. For detailed technical analysis, refer to the Patchstack security advisory.

Detection Methods for CVE-2025-67987

Indicators of Compromise

• Unusual database queries in WordPress logs containing SQL syntax characters such as single quotes, UNION statements, or comment delimiters
• Unexpected authentication attempts or access patterns from low-privilege user accounts
• Database error messages in application logs indicating malformed SQL queries
• Abnormal data access patterns or large data exports from quiz-related database tables

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns in HTTP requests
• Monitor WordPress database query logs for suspicious SQL syntax including UNION SELECT, OR 1=1, and encoded SQL commands
• Configure intrusion detection systems to alert on SQL injection attack signatures targeting WordPress plugins
• Review plugin-specific logs for unusual quiz or survey operations from authenticated users

Monitoring Recommendations

• Enable detailed logging for database queries and WordPress plugin activity
• Set up alerts for multiple failed or malformed database queries from the same source
• Monitor for unauthorized access to sensitive database tables storing user information
• Implement anomaly detection for unusual data extraction patterns from the WordPress database

How to Mitigate CVE-2025-67987

Immediate Actions Required

• Update Quiz And Survey Master plugin to the latest patched version immediately
• Audit user accounts with access to the WordPress installation and remove unnecessary privileges
• Review database logs for evidence of past exploitation attempts
• Implement a Web Application Firewall with SQL injection protection rules

Patch Information

ExpressTech Systems has been notified of this vulnerability affecting Quiz And Survey Master versions through 10.3.1. Administrators should check for available updates in the WordPress plugin repository and apply the latest security patch. For detailed patch information, consult the Patchstack vulnerability database.

Workarounds

• If immediate patching is not possible, consider temporarily deactivating the Quiz And Survey Master plugin until a fix can be applied
• Implement strict input validation at the application layer using a security plugin
• Configure WAF rules to filter SQL injection patterns targeting the quiz-master-next plugin endpoints
• Restrict plugin functionality to trusted administrator accounts only until patched

# WordPress CLI command to check plugin version
wp plugin list --name=quiz-master-next --fields=name,version,update_version

# Update the plugin to latest version
wp plugin update quiz-master-next

# Alternatively, deactivate plugin as temporary mitigation
wp plugin deactivate quiz-master-next