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CVE-2026-2412— Quiz and Survey Master (QSM) <= 10.3.5 - Authenticated (Contributor+) SQL Injection via 'merged_question' Parameter

Quick assessment

Affected
expresstech Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Quiz and Survey Master 10.3.5及之前版本存在SQL注入漏洞，该漏洞源于对merged_question参数清理不足，可能导致具有贡献者及以上权限的经过身份验证的攻击者进行SQL注入攻击。

CVSS 6.5 · Medium EPSS 0.32% · P23

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-2412

Vulnerability Information
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Vulnerability Title
Quiz and Survey Master (QSM) <= 10.3.5 - Authenticated (Contributor+) SQL Injection via 'merged_question' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Quiz and Survey Master (QSM) plugin for WordPress is vulnerable to SQL Injection via the 'merged_question' parameter in all versions up to, and including, 10.3.5. This is due to insufficient sanitization of user-supplied input before being used in a SQL query. The sanitize_text_field() function applied to the merged_question parameter does not prevent SQL metacharacters like ), OR, AND, and # from being included in the value, which is then directly concatenated into a SQL IN() clause without using $wpdb->prepare() or casting values to integers. 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Quiz and Survey Master SQL注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Quiz and Survey Master 10.3.5及之前版本存在SQL注入漏洞，该漏洞源于对merged_question参数清理不足，可能导致具有贡献者及以上权限的经过身份验证的攻击者进行SQL注入攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
expresstech Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker * ~ 10.3.5 -

II. Public POCs for CVE-2026-2412

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III. Intelligence Information for CVE-2026-2412

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Patches & Fixes for CVE-2026-2412 (4)

Vendor Advisories for CVE-2026-2412 (1)

IV. Related Vulnerabilities

Same product: Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker
Same vendor: expresstech
Same weakness: CWE-89

V. Comments for CVE-2026-2412

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