CVE-2026-13422
Medium
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.
SeverityMedium
CVSS4.3
Exploit probability—
ProductHD Quiz
PublishedJun 27, 2026
First seenJun 27, 2026
Weakness typeCWE-352Cross-site request forgery (CSRF)
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| harmonic_design HD Quiz | 2.2.0 ≤ v ≤ 2.2.1 | — |
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