CVE-2024-13383: HD Quiz < 2.0.0 - Editor+ Stored XSS

Severity: medium (CVSS 4.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-05-15 · updated 2026-06-17
Weakness: CWE-79

Description

The HD Quiz WordPress plugin before 2.0.0 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).

Affected products

Harmonic Design HD Quiz: before 2.0.0 — fixed in 2.0.0

How to fix

Upgrade to a fixed version: Harmonic Design HD Quiz 2.0.0. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/85bc905d-c960-4399-a879-2d18a4b03007/
https://wpscan.com/vulnerability/85bc905d-c960-4399-a879-2d18a4b03007/

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