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CVE-2026-15963— Quiz and Survey Master (QSM) <= 11.2.1 - Authenticated (Contributor+) SQL Injection via 'randon_category' Quiz Option

Quick assessment

Affected
expresstech Quiz and Survey Master (QSM) – Quiz Maker & 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 Quiz and Survey Master是WordPress基金会开源的一款免费的测验和调查制作工具。 WordPress Quiz and Survey Master 11.2.1及之前版本存在SQL注入漏洞，该漏洞源于对'randon_category' Quiz Option参数转义不足及SQL查询准备不足，容易受到SQL注入攻击，可能导致具有自定义级别及以上权限的经过身份验证的攻击者将额外SQL查询附加到现有查询中，提取数据库中的敏感信息。

CVSS 6.5 · Medium EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
expresstech Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker ≤ 11.2.1 affected
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I. Basic Information for CVE-2026-15963

Vulnerability Information
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Vulnerability Title
Quiz and Survey Master (QSM) <= 11.2.1 - Authenticated (Contributor+) SQL Injection via 'randon_category' Quiz Option
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 generic SQL Injection via 'randon_category' Quiz Option in all versions up to, and including, 11.2.1 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 custom-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 Quiz and Survey Master SQL注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Quiz and Survey Master是WordPress基金会开源的一款免费的测验和调查制作工具。 WordPress Quiz and Survey Master 11.2.1及之前版本存在SQL注入漏洞，该漏洞源于对'randon_category' Quiz Option参数转义不足及SQL查询准备不足，容易受到SQL注入攻击，可能导致具有自定义级别及以上权限的经过身份验证的攻击者将额外SQL查询附加到现有查询中，提取数据库中的敏感信息。
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) – Quiz Maker & Survey Maker 0 ~ 11.2.1 -

II. Public POCs for CVE-2026-15963

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III. Intelligence Information for CVE-2026-15963

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Patches & Fixes for CVE-2026-15963 (2)

Vendor Advisories for CVE-2026-15963 (1)

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-15963

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