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4.3

HD Quiz for WordPress plugin allows attackers to delete quizzes

CVE-2026-13422 · published 4 months ago
Summary

The HD Quiz plugin for WordPress has a security flaw that allows hackers to delete quizzes and other content by tricking a site administrator into clicking on a malicious link. This affects versions 2.2.0 to 2.2.1. To stay safe, update the plugin to the latest version.

Original advisory text
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. Thi...
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.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
4.3 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-352Cross-Site Request Forgery (CSRF)
Timeline
Published27 Jun 2026
Updated4 Nov 2026
First seen27 Jun 2026
Sources
CVE-2026-13422 · NVD
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