---
id: CVE-2025-9318
title: >-
  The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for
  WordPress is vulnerable to time-based SQL Injection via the ‘is_linking’
  parameter in all versions up to, and including, 10.3.1 due to insufficient
  escaping on the …
summary: >-
  The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for
  WordPress is vulnerable to time-based SQL Injection via the ‘is_linking’
  parameter in all versions up to, and including, 10.3.1 due to insufficient
  escaping on the …
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-89
vendor: expresstech
product: quiz_and_survey_master
affected:
  - quiz_and_survey_master < 10.3.2
patched:
  - quiz_and_survey_master 10.3.2
published: '2026-01-06'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T23:10:00.237'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-9318'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/10.2.6/php/rest-api.php#L533
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/e6524e66-5bd1-4616-8185-c0501a09893e?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00252
epssPercentile: 0.15092
ingestedAt: '2026-09-30T23:29:32.547Z'
---

## Overview

The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for WordPress is vulnerable to time-based SQL Injection via the ‘is_linking’ parameter in all versions up to, and including, 10.3.1 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 Subscriber-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

## Affected

- `quiz_and_survey_master < 10.3.2`

## Remediation

Upgrade past the affected range:

- `quiz_and_survey_master 10.3.2`