CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HThe UpdraftPlus: WP Backup & Migration Plugin plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 1.26.4 via the UpdraftPlus_Remote_Communications_V2::wp_loaded function. This is due to insufficient validation of the remote communications message format, where signature verification can be bypassed and unchecked decryption return values collapse to a predictable all-zero encryption key. This makes it possible for unauthenticated attackers to forge arbitrary RPC commands and run them as the connected administrator, such as uploading and activating a malicious plugin, which ultimately leads to remote code execution.
A security incident has been discovered affecting over 1.2 million WordPress sites using the PushEngage, OptinMonster, and TrustPulse plugins. An attacker tampered with the plugins' JavaScript files, creating backdoors t…
