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CVE-2025-9318— Quiz and Survey Master (QSM) <= 10.3.1 - Authenticated (Subscriber+) SQL Injection via `is_linking` Query 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 (QSM) – Easy Quiz and Survey Maker 10.3.1及之前版本存在SQL注入漏洞，该漏洞源于对用户提供的参数转义不足且现有SQL查询缺乏充分

CVSS 6.5 · Medium EPSS 0.23% · P14
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I. Basic Information for CVE-2025-9318

Vulnerability Information
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Vulnerability Title
Quiz and Survey Master (QSM) <= 10.3.1 - Authenticated (Subscriber+) SQL Injection via `is_linking` Query Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
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.
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 (QSM) – Easy Quiz and Survey Maker 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 (QSM) – Easy Quiz and Survey Maker 10.3.1及之前版本存在SQL注入漏洞，该漏洞源于对用户提供的参数转义不足且现有SQL查询缺乏充分
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 * ~ 10.3.1 -

II. Public POCs for CVE-2025-9318

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III. Intelligence Information for CVE-2025-9318

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Patches & Fixes for CVE-2025-9318 (1)

Vendor Advisories for CVE-2025-9318 (1)

Same Patch Batch · expresstech · 2026-01-06 · 3 CVEs total

CVE-2025-9637 6.5 MEDIUM Quiz and Survey Master (QSM) <= 10.3.1 - Missing Authorization to Unpublished, Private And
CVE-2025-9294 4.3 MEDIUM Quiz And Survey Master <= 10.3.1 - Missing Authorization to Authenticated (Subscriber+) Qu

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-2025-9318

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