CVE-2025-50035 MEDIUM

CVE-2025-50035: WordPress Fyrebox Quizzes plugin <= 3.1 - Cross Site Scripting (XSS) Vulnerability

Vendor Cyrilg
Product Fyrebox Quizzes
Weakness CWE-79 · XSS
Published June 20, 2025
Last update April 28, 2026

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in CyrilG Fyrebox Quizzes fyrebox-shortcode allows Stored XSS.This issue affects Fyrebox Quizzes: from n/a through <= 3.1.

Explanation of Vulnerability in Simple Terms

02Summary

Fyrebox Quizzes versions 3.1 and earlier contain a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. An attacker with low-level account access can craft a quiz or form that executes JavaScript in other users' browsers when they interact with the content. The vulnerability affects multiple users across the site due to scope change.

What an attacker can do

03Attacker Capabilities

Inject JavaScript code that runs in other users' browsers, potentially stealing session tokens or redirecting them to malicious sites.

Potential impact on your site

04Site Impact

Authenticated users can compromise other users' sessions or data; site reputation and visitor trust are at risk.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege account on the site; victim must view or interact with the malicious quiz or form.

Key dates

06Disclosure timeline

June 20, 2025 CVE published
April 28, 2026 Record updated