What the vulnerability does
01Description
The Logo Slider – Logo Carousel, Logo Showcase & Client Logo Slider Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the image alt text in all versions up to, and including, 4.9.0 due to insufficient input sanitization and output escaping in the 'logo-slider' shortcode. This makes it possible for authenticated attackers, with author level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
02Summary
The Logo Slider plugin for WordPress contains a stored cross-site scripting (XSS) vulnerability in versions up to 4.9.0. An authenticated user with low privileges can inject malicious scripts that execute in the browsers of other site visitors, potentially compromising their sessions or stealing data. The vulnerability affects the plugin's core functionality and impacts all users viewing affected content.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that runs in other users' browsers when they view the site.
Potential impact on your site
04Site Impact
Visitors' sessions and data may be compromised; site reputation and user trust at risk.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege WordPress account (e.g., contributor or subscriber role).
Key dates
06Disclosure timeline
March 21, 2026
CVE published
April 8, 2026
Record updated
