Zero-Day Advisory

Fortinet Discovers WordPress Image Hover Effects Ultimate Plugin Cross-Site Scripting Vulnerability


Fortinet's FortiGuard Labs has discovered a cross-site scripting (XSS) vulnerability in WordPress Image Hover Effects Ultimate Plugin.

WordPress Image Hover Effects Ultimate Plugin is an impressive, lightweight, responsive Image hover effects gallery. It is best used for portfolio/gallery/image showcase items in WordPress site using shortcodes and custom post.

The Image Hover Effects Ultimate plugin is vulnerable to Stored Cross-Site Scripting via the Media Image URL value that can be added to an Image Hover due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.


FortiGuard Labs released the following FortiGate IPS signature which covers this specific vulnerability:

Released Aug 31, 2022

Users should apply the solution provided by Oxilab.


Fortinet reported the vulnerability to Oxilab on December 21, 2021

Oxilab confirmed the vulnerability on December 22, 2021


This vulnerability was discovered by Vishnupriya Ilango & Zhouyuan Yang of Fortinet's FortiGuard Labs.

IPS Subscription

Fortinet customers who subscribe to Fortinet's intrusion prevention (IPS) service should be protected against this vulnerability with the appropriate configuration parameters in place. Fortinet's IPS service is one component of FortiGuard Subscription Services, which also offer comprehensive solutions such as antivirus, Web content filtering and antispam capabilities. These services enable protection against threats on both application and network layers. FortiGuard Services are continuously updated by FortiGuard Labs, which enables Fortinet to deliver a combination of multi-layered security intelligence and true zero-day protection from new and emerging threats. These updates are delivered to all FortiGate, FortiMail and FortiClient products. Fortinet strictly follows responsible disclosure guidelines to ensure optimum protection during a threat's lifecycle.