CVE-2026-13422 json
HD Quiz 2.2.0 - 2.2.1 - Cross-Site Request Forgery via Multiple AJAX Handlers
published 2026-06-27 4 mo ago modified 2026-06-29 4 mo ago also EUVD-2026-39932
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 17%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4 mo ago
Exploit prediction
0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N |
Affected products
- harmonic_design HD Quiz
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/c886ce5a-0633-4892-9471-c1a7ee858c93?source=cve
- plugins.trac.wordpress.org /browser/hd-quiz/tags/2.2.0/includes/functions.php#L39
- plugins.trac.wordpress.org /browser/hd-quiz/tags/2.2.1/includes/functions.php#L39
- plugins.trac.wordpress.org /browser/hd-quiz/tags/2.2.1/includes/actions-ajax.php#L87
- plugins.trac.wordpress.org /browser/hd-quiz/tags/2.2.1/includes/actions-ajax.php#L53
- plugins.trac.wordpress.org /browser/hd-quiz/tags/2.2.1/includes/actions-ajax.php#L68
- plugins.trac.wordpress.org /browser/hd-quiz/tags/2.2.1/includes/actions-ajax.php#L155
- plugins.trac.wordpress.org /browser/hd-quiz/tags/2.2.1/includes/actions-ajax.php#L179
- plugins.trac.wordpress.org /browser/hd-quiz/tags/2.2.1/includes/actions-ajax.php#L7
- plugins.trac.wordpress.org /browser/hd-quiz/tags/2.2.0/includes/actions-ajax.php#L87
- plugins.trac.wordpress.org /browser/hd-quiz/tags/2.2.0/includes/actions-ajax.php#L53
- plugins.trac.wordpress.org /browser/hd-quiz/tags/2.2.0/includes/actions-ajax.php#L68
- plugins.trac.wordpress.org /browser/hd-quiz/tags/2.2.0/includes/actions-ajax.php#L155
- plugins.trac.wordpress.org /browser/hd-quiz/tags/2.2.0/includes/actions-ajax.php#L179
- plugins.trac.wordpress.org /browser/hd-quiz/tags/2.2.0/includes/actions-ajax.php#L7
- plugins.trac.wordpress.org /browser/hd-quiz/tags/2.2.2/includes/functions.php#L40
Sources
- CVE List CVE-2026-13422
- NVD CVE-2026-13422
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.