Meta Slider is a widely used WordPress plugin that helps users create image sliders, carousels, and other content displays. With over 600,000 installations, the plugin is a popular choice among developers and website owners for its ease of use and flexibility. However, a serious security flaw—CVE-2025-1203—has been discovered in Meta Slider, which allows malicious users to inject and execute JavaScript through a Stored Cross-Site Scripting (XSS) attack. This vulnerability enables attackers to potentially create backdoors on WordPress sites, leading to full administrative control of the site.
CVE-2025-1203 – Meta Slider – Stored XSS to Backdoor Creation – POC
