CVE-2026-116509
Deferred Deferred - Pending Action

SQL Injection in Quiz and Survey Master WordPress Plugin

Publication date: 2026-11-13

Last updated on: 2026-11-13

Assigner: Wordfence

Description
The Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker plugin for WordPress is vulnerable to generic SQL Injection via the 'qpages' parameter in all versions up to, and including, 11.2.9 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with contributor-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. The injected payload survives storage and a published-status check in display_shortcode() because a non-numeric ID causes the isPublished lookup to return an empty string, after which the payload is imploded directly into a WHERE question_id IN() clause via plain string interpolation with no wpdb->prepare() or esc_sql() call.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-11-13
Last Modified
2026-11-13
Generated
2026-11-13
AI Q&A
2026-11-13
EPSS Evaluated
N/A
NVD
CVE-2026-116509
EUVD
EUVD-2026-124989

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
expresstech Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker From 0 (inc) to 11.2.9 (inc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is a SQL injection vulnerability in the Quiz and Survey Master (QSM) WordPress plugin up to version 11.2.9. It occurs due to improper escaping of the 'qpages' parameter and lack of prepared statements. Authenticated attackers with contributor-level access or higher can inject malicious SQL queries to extract sensitive database information.

Detection Guidance

To detect this vulnerability, check WordPress sites running the Quiz and Survey Master plugin versions up to 11.2.9. Look for unusual SQL query patterns or database access logs. Use commands like grep to search for suspicious 'qpages' parameter usage in web server logs or plugin files.

Impact Analysis

If exploited, attackers could steal sensitive data from your WordPress database, such as user credentials, personal information, or quiz/survey responses. The vulnerability requires only contributor-level access, making it easier for unauthorized users to compromise your site.

Compliance Impact

This vulnerability could lead to unauthorized access and exposure of personal data, violating GDPR and HIPAA requirements for data protection and confidentiality. Organizations may face legal penalties and reputational damage if exploited.

Mitigation Strategies

Immediately update the Quiz and Survey Master plugin to the latest version beyond 11.2.9. If updating is not possible, disable the plugin temporarily. Review database access logs for signs of exploitation and restrict contributor-level access to only trusted users.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-116509. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart

Security Radar

News mentioning this vulnerability
Loading related security news...