CVE-2026-54806

Name of the Vulnerable Software and Affected Versions WP Activity Log versions prior to 5.6.3.2

Description The WP Activity Log plugin for WordPress allows unauthenticated attackers to perform PHP Object Injection through the deserialization of untrusted input. PHP Object Injection occurs when an application deserializes data from an untrusted source, potentially allowing an attacker to manipulate the object's properties. While no POP chain (a sequence of gadgets used to achieve code execution) is present in the software itself, the presence of a POP chain in another installed plugin or theme could enable the deletion of arbitrary files, retrieval of sensitive data, or remote code execution.

Recommendations Update WP Activity Log to version 5.6.3.2 or later.