CVE-2026-13422 HD Quiz 2.2.0 - 2.2.1 - Cross-Site Request Forgery via Multiple AJAX Handlers
Unauthenticated attackers can trick administrators into modifying or deleting quizzes and changing plugin settings via forged requests.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-13422?
CVE-2026-13422 is a medium-severity vulnerability in harmonic_design HD Quiz, published on 27 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-352
Which versions are affected by CVE-2026-13422?
How do I fix CVE-2026-13422?
No fix has been published for CVE-2026-13422 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-13422 being exploited?
There is no known exploitation of CVE-2026-13422 in the wild and no public exploit code.
Sources
Also known as GHSA-73vw-76h4-g45m.