A critical vulnerability, designated CVE-2026-56058, has been identified in the Quform plugin for WordPress. This vulnerability allows authenticated attackers to upload arbitrary files to the server, potentially enabling remote code execution. The flaw affects all versions of Quform up to and including 2.23.0. WordPress sites utilizing this plugin are at significant risk, as an attacker could exploit this vulnerability to gain unauthorized access and control over the affected system. The CVSS score of 9.9 indicates a high severity level, emphasizing the urgency of mitigation. Organizations should immediately apply the latest security patches provided by the plugin's developers to address this issue. Additionally, administrators are advised to review their WordPress environments for any unauthorized file uploads and ensure that all plugins are updated to their most secure versions. Failure to address this vulnerability could result in severe security breaches, including data exfiltration, service disruption, or further exploitation of the compromised system.