CVE-2022-4950: 
WordPress vulnerability analysis and mitigation

CVE-2022-4950 affects multiple WordPress plugins developed by Cool Plugins, exposing them to arbitrary plugin installation and activation vulnerabilities. The vulnerability was discovered on April 1st, 2022, and publicly disclosed on April 12th, 2022. The affected plugins include Events Shortcodes For The Events Calendar, Cryptocurrency Widgets, Cool Timeline, and several other plugins with installation bases ranging from 1,000 to 20,000+ users (NinTechNet Blog).

The vulnerability stems from missing capability checks and improper CSRF verification in the cool_plugins_install and cool_plugins_activate AJAX actions. The security flaw allows authenticated users, even with minimal permissions like subscriber roles, to bypass security checks by exploiting the WordPress nonce system. The vulnerability has a CVSS v3.1 score of 8.8 (High), indicating its severe nature (Wordfence).

The vulnerability enables authenticated attackers to install and activate arbitrary plugins via remotely hosted archives they control. This capability could lead to remote code execution on affected WordPress installations, potentially compromising the entire website (NinTechNet Blog).

The vulnerability requires authentication but can be exploited by users with minimal permissions, such as subscribers. The exploit involves bypassing security checks by using any valid WordPress nonce, such as the logout nonce, to perform unauthorized plugin installations (NinTechNet Blog).

Website administrators are advised to immediately update their installations to the following fixed versions: Events Shortcodes For The Events Calendar (2.0), Cryptocurrency Widgets (2.5), Cool Timeline (2.4), and other affected plugins to their respective patched versions. Users of NinjaFirewall WP Edition (free) and NinjaFirewall WP+ Edition (premium) are protected against this vulnerability (NinTechNet Blog).