CVE-2025-58838

Vulnerability

Overview

The Smooth Accordion plugin for WordPress (versions up to and including 2.1) contains a Stored Cross-Site Scripting (XSS) vulnerability due to improper neutralization of user-supplied input during web page generation [1]. This allows an authenticated attacker with sufficient privileges to inject arbitrary HTML and JavaScript code into the plugin's settings or content fields, which is then stored and executed when other users access the affected page.

Exploitation

Details

An attacker must have at least contributor-level access to the WordPress site to exploit this vulnerability. The injected script is stored in the plugin's database and will execute in the browsers of any visitor viewing the page containing the malicious content. No additional user interaction is required for the script to run once stored [1]. The vulnerability has been flagged as being used in mass-exploit campaigns, targeting websites regardless of size or popularity.

Impact

Successful exploitation allows an attacker to perform a variety of malicious actions, including redirecting visitors to phishing sites, displaying unwanted advertisements, stealing session cookies, or defacing the website. The stored nature of the XSS makes it particularly dangerous as the payload persists until manually removed.

Mitigation

The vendor has released a patched version of the plugin. Users are strongly advised to update to the latest version immediately. If updating is not possible, consider disabling the plugin or implementing a web application firewall (WAF) rule to block XSS payloads [1].