CVE-2025-1562 is a critical security vulnerability affecting the FunnelKit Automations plugin (formerly known as Recover WooCommerce Cart Abandonment, Newsletter, Email Marketing, Marketing Automation) for WordPress and WooCommerce. The vulnerability arises from a missing authorization check in the install_or_activate_addon_plugins() function combined with a weak nonce hash mechanism. This flaw allows unauthenticated attackers to bypass capability checks and install arbitrary plugins on the affected WordPress site. Since plugin installation can lead to execution of arbitrary code, attackers can fully compromise the site, escalate privileges, steal sensitive data, or deploy further malware. The vulnerability affects all versions up to and including 3.5.3. The CVSS v3.1 score is 9.8 (critical), with attack vector network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), and high impact on confidentiality, integrity, and availability (C:H/I:H/A:H). Although no exploits have been reported in the wild yet, the vulnerability's characteristics make it highly exploitable. The root cause is a CWE-862 Missing Authorization vulnerability, which is a common but severe security oversight in web applications. This vulnerability is particularly dangerous in WordPress environments where plugins have extensive control over site functionality and data. The lack of proper authorization checks and weak nonce validation means that automated or manual attacks can easily compromise vulnerable sites remotely.

The impact of CVE-2025-1562 is severe and wide-ranging. Successful exploitation allows attackers to install arbitrary plugins without authentication, effectively granting full control over the WordPress site. This can lead to complete site takeover, including the ability to modify or steal sensitive customer data, manipulate e-commerce transactions, deface websites, or use the compromised site as a launchpad for further attacks such as phishing or malware distribution. The integrity and availability of the site are also at risk, potentially causing significant business disruption and reputational damage. For organizations relying on FunnelKit Automations for marketing and CRM functions, this vulnerability threatens the confidentiality of customer information and the reliability of marketing operations. Given WordPress’s dominant market share in website hosting and WooCommerce’s popularity in e-commerce, the scope of affected systems is large, increasing the potential for widespread exploitation. The lack of required authentication and user interaction lowers the barrier for attackers, increasing the likelihood of automated mass exploitation campaigns once exploit code becomes available.

To mitigate CVE-2025-1562, organizations should immediately upgrade the FunnelKit Automations plugin to a patched version once released by the vendor. Until a patch is available, administrators should restrict plugin installation capabilities to trusted users only and disable any automatic plugin installation features. Implementing Web Application Firewall (WAF) rules to block unauthorized requests targeting the install_or_activate_addon_plugins() function can help reduce exposure. Monitoring web server and WordPress logs for suspicious activity related to plugin installation attempts is critical for early detection. Additionally, hardening WordPress installations by limiting file permissions, disabling PHP execution in upload directories, and enforcing strong administrative access controls can reduce the impact of exploitation. Regular backups and incident response plans should be in place to recover quickly from potential compromises. Organizations should also educate their security teams about this vulnerability and prepare to respond rapidly to any emerging exploit attempts.