Null Byte Nightmare: Critical WPvivid Backup Flaw (CVSS 9.8) Exposes 800K WordPress Sites Vulnerability Report Null Byte Nightmare: Critical WPvivid Backup Flaw (CVSS 9.8) Exposes 800K WordPress Sites Do Son February 11, 2026 0 A critical security vulnerability has been discovered in WPvivid Backup, a popular WordPress plugin used by over... Read More Read more about Null Byte Nightmare: Critical WPvivid Backup Flaw (CVSS 9.8) Exposes 800K WordPress Sites