Critical · published February 11, 2026
🚨 An unauthenticated file upload flaw in WPvivid Backup & Migration could let attackers slip in malicious PHP files without breaking a sweat! 🔥 Think of this like a restaurant where the head chef is too trusting and lets anyone walk in and place any old order without checking their credentials. When the kitchen isn’t paying attention, someone could sneak in an unusual recipe that ruins the whole menu! An attacker could exploit this vulnerability to upload PHP files to publicly accessible directories, giving them remote code execution capabilities. This means they could take control of your WordPress site, read sensitive data, inject malware, or even deface it. The consequences could be absolutely devastating for your organization and your users!
Think of this like a restaurant where the head chef is too trusting and lets anyone walk in and place any old order without checking their credentials. When the kitchen isn’t paying attention, someone could sneak in an unusual recipe that ruins the whole menu! This vulnerability arises from improper error handling during RSA decryption and a lack of path sanitization in the WPvivid Backup & Migration plugin (up to version 0.9.123). When decryption fails, it allows malicious payloads formatted as null bytes to be treated as valid, facilitating directory traversal and arbitrary file uploads.
An attacker could exploit this vulnerability to upload PHP files to publicly accessible directories, giving them remote code execution capabilities. This means they could take control of your WordPress site, read sensitive data, inject malware, or even deface it. The consequences could be absolutely devastating for your organization and your users! Update the WPvivid Backup & Migration plugin to version 0.9.124 or later immediately. Additionally, review your security policies around file uploads and ensure that proper input validation and sanitization are in place. Don’t forget to monitor your backups and site for any unusual activity! You've got this! Take these steps to lock down your site and protect against this vulnerability! 🛡️