CVE-2026-95603 in Reycob Product Import Export Plugin
Summary
by MITRE • 09/23/2026
Shop manager PHP Object Injection in Reycob Product Import Export <= 2.3.0 versions.
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Analysis
by VulDB Data Team • 09/23/2026
The vulnerability identified as CVE-2024-XXXXX involves a critical PHP Object Injection flaw within the Reycob Product Import Export plugin for WordPress, specifically affecting versions up to and including 2.3.0. This security issue stems from insufficient input validation and sanitization mechanisms when handling user-supplied data during product import operations. The core technical failure lies in the application's ability to deserialize untrusted PHP serialized strings without adequate verification of their integrity or origin. In PHP environments, object deserialization is a powerful feature that can instantiate complex objects with specific properties and methods; however, if an attacker controls the input passed to these serialization functions, they can manipulate the resulting object graph. This particular instance allows authenticated shop managers, who possess elevated privileges within the WordPress ecosystem, to inject malicious serialized payloads into the import process. By crafting a specially crafted PHP serialized string containing references to vulnerable classes or gadgets available in the application's dependency tree, an attacker can trigger unintended side effects during the deserialization phase.
From a technical perspective, this vulnerability aligns with CWE-502, which denotes Deserialization of Untrusted Data. The flaw exploits the inherent risks associated with PHP's unserialize function when applied to data derived from user inputs such as file uploads or form submissions in an import tool. When the plugin processes these imports, it likely passes parts of the uploaded content directly into deserialization routines without checking if the serialized objects correspond to expected classes or whitelisted types. This lack of strict type checking allows for gadget chain construction, where a sequence of existing methods within the application's codebase is chained together to achieve arbitrary code execution or other malicious outcomes. The presence of this vulnerability in an import/export utility is particularly dangerous because these tools are designed to handle large volumes of data and often operate with high-level permissions to ensure seamless integration with e-commerce databases, thereby amplifying the potential impact of a successful exploitation attempt.
The operational impact of this PHP Object Injection vulnerability extends beyond simple unauthorized access or data leakage. If successfully exploited by an authenticated shop manager, it can lead to Remote Code Execution (RCE), allowing the attacker to execute arbitrary commands on the server hosting the WordPress instance. This could result in complete compromise of the web application and potentially the underlying operating system if privilege escalation is feasible. Attackers may use this vector to install persistent backdoors, exfiltrate sensitive customer data including payment information stored in the database, or deface the website for reputational damage. Furthermore, because the vulnerability requires authentication as a shop manager, it represents an insider threat scenario where compromised credentials of lower-privileged users can be leveraged to achieve significant system control. This undermines the principle of least privilege and highlights the risk posed by overly permissive roles in conjunction with insecure coding practices.
In terms of industry standards mapping, this vulnerability is closely associated with MITRE ATT&CK technique T1059, specifically Command and Scripting Interpreter sub-techniques if RCE is achieved, or T1190 for Exploit Public-Facing Application if the import feature is accessible via web interfaces. The root cause falls under CWE-20 Improper Input Validation and CWE-470 Use of Externally-Controlled Input to Select Classes or Code. These classifications emphasize that the failure was not merely in handling external data but specifically in failing to validate the structure and content of serialized objects before processing them, a common pitfall in legacy PHP applications that have not been updated to follow modern security best practices regarding object instantiation.
Mitigation strategies for this vulnerability prioritize immediate remediation through software updates. Administrators running Reycob Product Import Export versions 2.3.0 or earlier must upgrade to the latest patched version released by the vendor, which should implement strict input validation and safe deserialization patterns such as whitelisting allowed classes during unserialization. In cases where updating is not immediately possible, temporary mitigations include restricting access to the import/export functionality to only trusted administrators rather than shop managers, thereby reducing the attack surface for authenticated users with lower privilege levels. Additionally, implementing Web Application Firewall rules that detect and block suspicious PHP serialized strings containing known gadget signatures can provide a layer of defense in depth. Regular security audits focusing on deserialization practices across all WordPress plugins are recommended to prevent similar vulnerabilities from being introduced or overlooked in future updates.