CVE-2026-78527

Name of the Vulnerable Software and Affected Versions GS Testimonial Slider versions prior to 3.3.11

Description This issue involves PHP Object Injection caused by the deserialization of untrusted input. Authenticated attackers with contributor-level access or higher can inject a PHP Object. While no POP chain (a sequence of gadgets used to execute arbitrary code during deserialization) is present in the software itself, the presence of a POP chain via another installed plugin or theme could allow an attacker to execute code, retrieve sensitive data, or delete arbitrary files.

Recommendations Update GS Testimonial Slider to version 3.3.11 or later.