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CVE-2026-9233— Quiz and Survey Master (QSM) <= 11.1.4 - Missing Authorization to Authenticated (Contributor+) Arbitrary Modification via qsm_insert_quiz_template AJAX Action

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.

expresstech Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker是expresstech的WordPress Quiz plugin。 ExpressTech Systems Quiz and Survey Master 11.1.4及之前版本存在授权问题漏洞，该漏洞源于未正确验证用户授权，可能导致经过身份验证的攻击者（具有贡献者级别及以上权限）创建、修改和删除数据库表mlw_quiz_output_templates中的测验输出模

CVSS 4.3 · Medium EPSS 0.47% · P39

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
expresstech Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker ≤ 11.1.4 affected
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I. Basic Information for CVE-2026-9233

Vulnerability Information
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Vulnerability Title
Quiz and Survey Master (QSM) <= 11.1.4 - Missing Authorization to Authenticated (Contributor+) Arbitrary Modification via qsm_insert_quiz_template AJAX Action
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 authorization bypass in all versions up to, and including, 11.1.4. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to create, modify, and delete quiz output templates stored in the mlw_quiz_output_templates database table, including storing unsanitized HTML content such as arbitrary script tags.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
ExpressTech Systems Quiz and Survey Master 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
expresstech Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker是expresstech的WordPress Quiz plugin。 ExpressTech Systems Quiz and Survey Master 11.1.4及之前版本存在授权问题漏洞，该漏洞源于未正确验证用户授权，可能导致经过身份验证的攻击者（具有贡献者级别及以上权限）创建、修改和删除数据库表mlw_quiz_output_templates中的测验输出模
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 0 ~ 11.1.4 -

II. Public POCs for CVE-2026-9233

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III. Intelligence Information for CVE-2026-9233

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Patches & Fixes for CVE-2026-9233 (4)

IV. Related Vulnerabilities

Same product: Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker
Same vendor: expresstech
Same weakness: CWE-862

V. Comments for CVE-2026-9233

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