This vulnerability (CVE-2026-56005) is classified as CWE-79, indicating improper neutralization of input during web page generation, resulting in Cross-Site Scripting (XSS). It affects the WP Activity Log plugin for WordPress, specifically versions up to and including 5.6.3.1. The flaw allows users with subscriber privileges to execute malicious scripts in the context of other users, potentially leading to information disclosure, data manipulation, or denial of service. The CVSS 3.1 base score is 7.1, reflecting network attack vector, low attack complexity, no privileges required, but user interaction needed, with scope changed and low impact on confidentiality, integrity, and availability. No patch or official fix has been documented yet.

Exploitation of this vulnerability can allow an attacker with subscriber-level access to execute arbitrary scripts in the context of other users, potentially leading to partial compromise of confidentiality, integrity, and availability of the affected system. This may result in unauthorized data access, manipulation, or disruption of service.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, consider restricting subscriber privileges or disabling the affected plugin if feasible to reduce exposure.