CVE-2025-62121

Vulnerability

Overview The plugin Logo Slider, Logo Carousel, Logo showcase, Client Logo (tc-logo-slider) for WordPress versions up to and including 1.8.1 suffers from a stored cross-site scripting (XSS) vulnerability due to improper neutralization of user input during web page generation. This allows authenticated users with contributor-level privileges to inject arbitrary JavaScript code that gets stored and executed when other users visit affected pages [1].

Exploitation

Prerequisites Exploitation requires the attacker to have at least contributor access to the WordPress site. The attacker can then input malicious HTML or JavaScript into plugin fields, such as image titles or descriptions, which are not properly sanitized. When an administrator or other user views the page containing the slider, the injected script executes. User interaction (e.g., clicking a link) is not required for the stored XSS to trigger; the script runs automatically on page load [1].

Impact

Successful exploitation allows an attacker to perform actions like redirecting visitors to malicious sites, injecting advertisements, or stealing session cookies. These actions can compromise site integrity and user privacy. The vulnerability is often used in mass-exploit campaigns targeting WordPress sites, regardless of their popularity [1].

Mitigation

Users are strongly advised to update the plugin to version 1.8.2 or later as soon as possible. If unable to update, restricting contributor and author permissions or implementing a Web Application Firewall (WAF) may provide temporary protection. The vendor has released a patch addressing the issue [1].