Stored Cross-Site Scripting Vulnerability in Client Testimonial Slider Plugin for WordPress

CVE-2026-2716

What is CVE-2026-2716?

The Client Testimonial Slider plugin for WordPress is susceptible to Stored Cross-Site Scripting (XSS) due to inadequate input validation and output encoding in the 'Testimonial Heading' setting. This vulnerability impacts all versions up to and including 2.0, particularly affecting multi-site setups or those with unfiltered_html disabled. Authenticated users with Administrator-level access can exploit this flaw to inject malicious scripts, which execute when other users access the compromised pages, potentially leading to unauthorized activity or data breaches.

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References