Acronis has warned that a high-severity security flaw in its Backup plugin for cPanel and Web Host Manager (WHM) deployments has been exploited in the wild. The vulnerability, tracked as CVE-2026-87886 (CVSS score: 7.8), is described as a case of local privilege escalation due to insecure file permissions. It affects the following versions - Acronis Backup plugin for cPanel & WHM (Linux
Acronis disclosed a high-severity Linux local privilege escalation vulnerability in its backup plugin for cPanel, WebHost Manager (WHM), and Plesk that may be exploited in the wild. [...]
