CVE-2025-4387 in Abandoned Cart Pro for WooCommerce Plugin
Summary
by MITRE • 06/10/2025
The Abandoned Cart Pro for WooCommerce plugin contains an authenticated arbitrary file upload vulnerability due to missing file type validation in the wcap_add_to_cart_popup_upload_files function in all versions up to, and including, 9.16.0. This makes it possible for an authenticated attacker, with subscriber-level access and above, to upload arbitrary files on the affected site's server which may allow for either remote or local code execution depending on the server configuration.
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Analysis
by VulDB Data Team • 06/10/2025
The vulnerability identified as CVE-2025-4387 resides within the Abandoned Cart Pro for WooCommerce plugin, a widely used extension for WordPress e-commerce platforms. This plugin facilitates automated email campaigns to recover lost shopping carts by tracking user activity and sending reminders. The flaw manifests in the wcap_add_to_cart_popup_upload_files function which handles file uploads associated with cart abandonment features. The vulnerability affects all versions up to and including 9.16.0, representing a significant security gap that has persisted across multiple releases. The issue stems from insufficient input validation mechanisms that fail to properly verify file types during the upload process, creating an exploitable condition that could be leveraged by malicious actors.
The technical nature of this vulnerability places it firmly within the category of insecure file upload flaws, which are commonly classified under CWE-434 and CWE-435. The missing file type validation creates a path for attackers to bypass normal security controls and upload malicious files to the target server. An authenticated attacker with subscriber-level privileges or higher can exploit this weakness to upload files that may include web shells, malicious scripts, or other harmful payloads. The severity of this vulnerability escalates significantly when considering that the uploaded files can potentially execute code on the server, depending on the hosting environment's configuration. This arbitrary file upload vulnerability represents a critical escalation path that could allow attackers to gain unauthorized control over the affected WordPress installation and potentially compromise the entire web server.
The operational impact of CVE-2025-4387 extends beyond simple data compromise, as it provides attackers with potential remote code execution capabilities that could lead to complete system takeover. Once an attacker successfully uploads malicious files, they can leverage the compromised plugin to establish persistent access, exfiltrate sensitive data, or use the compromised server as a launchpad for further attacks against the broader network. The vulnerability's exploitation requires only subscriber-level access, making it particularly concerning as many WordPress installations grant such privileges to users who create accounts for commenting or other basic site functions. This low privilege requirement significantly increases the attack surface and makes the vulnerability more attractive to threat actors who may already have access to compromised user accounts. The potential for local code execution further compounds the risk, as attackers could manipulate server configurations, access database credentials, or modify core WordPress files to maintain persistence.
Mitigation strategies for CVE-2025-4387 should prioritize immediate plugin updates to versions that address the file validation flaw, as this represents the most direct solution to the vulnerability. Organizations should implement comprehensive access controls to limit user privileges and ensure that only trusted administrators have subscriber-level access to their sites. Network-based security measures including web application firewalls and intrusion detection systems can provide additional layers of protection by monitoring for suspicious file upload patterns and potentially malicious file content. Security teams should conduct thorough vulnerability assessments to identify any unauthorized file uploads that may have occurred prior to patching, and implement regular security audits of plugin installations to ensure all components remain up-to-date. The ATT&CK framework categorizes this vulnerability under T1190 - Exploit Public-Facing Application, highlighting the need for proper application hardening and input validation as defensive measures. Additionally, organizations should consider implementing file type whitelisting, mandatory file extension validation, and secure file storage practices to prevent similar vulnerabilities from occurring in other applications or plugins within their infrastructure.