WordPress Boutique theme < 2.4.6 - Reflected Cross Site Scripting (XSS) vulnerability

The primary impact of this Reflected XSS vulnerability is the ability for an attacker to execute arbitrary JavaScript code within the context of a victim's browser session. This can be exploited to steal cookies containing authentication tokens, redirect users to phishing sites, or deface the website. Successful exploitation hinges on tricking a user into clicking a malicious link containing the injected script. The attacker could potentially gain access to sensitive user data, including personal information and financial details, depending on the website's functionality and the user's privileges. While this is a reflected XSS, meaning it requires user interaction, the ease of crafting and distributing malicious links makes it a significant risk.

Websites using the kute-boutique WordPress plugin, particularly those with user input fields or features that rely on URL parameters, are at risk. Shared hosting environments where multiple websites share the same server resources are also at increased risk, as a vulnerability in one website could potentially be exploited to compromise others.

• wordpress / plugin:

wp plugin list | grep kute-boutique

• wordpress / plugin: Check plugin version using wp plugin list and verify it's below 2.4.6. • wordpress / plugin: Review WordPress access logs for suspicious URL parameters containing JavaScript code (e.g., ?param=<script>alert(1)</script>). • wordpress / plugin: Use a WordPress security scanner plugin to identify potential XSS vulnerabilities.

1. 2026-03-25Disclosure

   disclosure

1. 予約済み2026-02-02
2. 公開日2026-03-25
3. 更新日2026-04-28
4. EPSS 更新日2026-04-02

The most effective mitigation for CVE-2026-25342 is to immediately upgrade the kute-boutique WordPress plugin to version 2.4.6 or later. If upgrading is not immediately feasible due to compatibility issues or testing requirements, consider implementing a Web Application Firewall (WAF) rule to filter out potentially malicious URL parameters. Specifically, look for URL parameters containing JavaScript code or HTML tags. Additionally, carefully review and sanitize all user-supplied input before rendering it on the website. After upgrading, confirm the fix by attempting to inject a simple XSS payload (e.g., <script>alert(1)</script>) through a URL parameter and verifying that it is not executed.