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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-13422

26
FAUCET Score

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.

First published: Jun 27, 2026Last modified: Jun 29, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.2.0, <= 2.2.1CPE match
cpe:2.3:a:harmonicdesign:hd_quiz:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.18%
Probability of exploitation in next 30 days
EPSS Percentile
7.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0018 is in the 7th percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

plugins.trac.wordpress.org / browser/hd-quiz/tags/2.2.0/includes/actions-ajax.php
plugins.trac.wordpress.org / browser/hd-quiz/tags/2.2.0/includes/actions-ajax.php
plugins.trac.wordpress.org / browser/hd-quiz/tags/2.2.0/includes/actions-ajax.php
plugins.trac.wordpress.org / browser/hd-quiz/tags/2.2.0/includes/actions-ajax.php
plugins.trac.wordpress.org / browser/hd-quiz/tags/2.2.0/includes/actions-ajax.php
plugins.trac.wordpress.org / browser/hd-quiz/tags/2.2.0/includes/actions-ajax.php
plugins.trac.wordpress.org / browser/hd-quiz/tags/2.2.0/includes/functions.php
plugins.trac.wordpress.org / browser/hd-quiz/tags/2.2.1/includes/actions-ajax.php
plugins.trac.wordpress.org / browser/hd-quiz/tags/2.2.1/includes/actions-ajax.php
plugins.trac.wordpress.org / browser/hd-quiz/tags/2.2.1/includes/actions-ajax.php
plugins.trac.wordpress.org / browser/hd-quiz/tags/2.2.1/includes/actions-ajax.php
plugins.trac.wordpress.org / browser/hd-quiz/tags/2.2.1/includes/actions-ajax.php
plugins.trac.wordpress.org / browser/hd-quiz/tags/2.2.1/includes/actions-ajax.php
plugins.trac.wordpress.org / browser/hd-quiz/tags/2.2.1/includes/functions.php
plugins.trac.wordpress.org / browser/hd-quiz/tags/2.2.2/includes/functions.php
wordfence.com / threat-intel/vulnerabilities/id/c886ce5a-0633-4892-9471-c1a7ee858c93