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CVE-2026-13422— HD Quiz 2.2.0 - 2.2.1 - Cross-Site Request Forgery via Multiple AJAX Handlers

Quick assessment

Affected
harmonic_design HD Quiz
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.

harmonicdesign hd quiz是harmonicdesign个人开发者开源的一个创建和发布测验的插件。 Harmonic Design HD Quiz 2.2.0版本至2.2.1版本存在跨站请求伪造漏洞，该漏洞源于hdq_validate_nonce函数中非ce验证缺失或不正确，可能导致未经身份验证的攻击者通过伪造请求删除或修改测验和问题、创建新测验以及更改插件设置。

CVSS 4.3 · Medium EPSS 0.26% · P17

Affected Version Matrix 1

VendorProduct Version RangeStatus
harmonic_design HD Quiz 2.2.0≤ 2.2.1 affected
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I. Basic Information for CVE-2026-13422

Vulnerability Information
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Vulnerability Title
HD Quiz 2.2.0 - 2.2.1 - Cross-Site Request Forgery via Multiple AJAX Handlers
Source: CVE Program / CVE List V5
Vulnerability Description
The HD Quiz plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions 2.2.0 to 2.2.1. This is due to missing or incorrect nonce validation on the hdq_validate_nonce function. This makes it possible for unauthenticated attackers to delete or modify quizzes and questions, create new quizzes, and change plugin settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Harmonic Design HD Quiz 跨站请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
harmonicdesign hd quiz是harmonicdesign个人开发者开源的一个创建和发布测验的插件。 Harmonic Design HD Quiz 2.2.0版本至2.2.1版本存在跨站请求伪造漏洞，该漏洞源于hdq_validate_nonce函数中非ce验证缺失或不正确，可能导致未经身份验证的攻击者通过伪造请求删除或修改测验和问题、创建新测验以及更改插件设置。
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
harmonic_design HD Quiz 2.2.0 ~ 2.2.1 -

II. Public POCs for CVE-2026-13422

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III. Intelligence Information for CVE-2026-13422

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Patches & Fixes for CVE-2026-13422 (7)

News Coverage for CVE-2026-13422 (1)

Vendor Pages for CVE-2026-13422 (1)

Other References for CVE-2026-13422 (4)

IV. Related Vulnerabilities

Same product: HD Quiz
Same weakness: CWE-352

V. Comments for CVE-2026-13422

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