CVE-2026-103349 in Product Feed Pro Plugin
Summary
by MITRE • 10/05/2026
Deserialization of Untrusted Data vulnerability in Rymera Web Co Product Feed PRO for WooCommerce woo-product-feed-pro allows Object Injection.This issue affects Product Feed PRO for WooCommerce: from n/a through 13.5.7.
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Analysis
by VulDB Data Team • 10/05/2026
The identified vulnerability represents a critical security flaw within the Rymera Web Co Product Feed PRO plugin for WordPress, specifically affecting versions ranging from initial releases up to version 13.5.7. This issue is classified as an insecure deserialization of untrusted data, which directly facilitates object injection attacks against the targeted application environment. In modern web development and content management systems like WordPress, plugins frequently handle complex data structures that are serialized for storage or transmission between different components of the system. When a plugin fails to properly validate or sanitize this incoming data before passing it through its deserialization mechanism, it creates an opening for malicious actors to manipulate the internal state of the application.
The technical root cause lies in the improper handling of PHP objects during the unserialization process. Deserialization is the reverse operation of serialization, where a serialized string is converted back into a native object structure. If the input data originates from an untrusted source and is not rigorously checked for integrity or expected types, an attacker can craft a malicious payload containing specially constructed serialized strings. When this payload is processed by the vulnerable function within Product Feed PRO, it triggers the instantiation of arbitrary PHP objects rather than simple data structures. This capability allows the injection of unexpected object instances into the application's memory space, bypassing standard security controls that rely on type checking and input validation.
From an operational perspective, the impact of this vulnerability is severe due to its potential for remote code execution and privilege escalation. By injecting malicious objects, an attacker can exploit existing gadget chains within the WordPress core or other installed plugins to execute arbitrary system commands. This could lead to complete compromise of the web server hosting the site, allowing the theft of sensitive customer data, modification of website content, or use of the compromised server as a pivot point for further attacks against internal networks. The vulnerability is particularly dangerous because it often requires only authenticated access with minimal privileges, such as that held by subscribers or contributors in many WordPress configurations, thereby expanding the attack surface significantly beyond just administrator-level accounts.
This flaw aligns closely with Common Weakness Enumeration identifier CWE-502, which describes deserialization of untrusted data. It also maps to several techniques within the MITRE ATT&CK framework for enterprise security, specifically T1190 Exploit Public-Facing Application and potentially T1059 Command and Scripting Interpreter if code execution is achieved through object manipulation. The lack of strict input validation on serialized payloads violates fundamental principles of secure coding practices that mandate treating all external inputs as hostile until proven otherwise.
Mitigation strategies must prioritize immediate patching to the latest stable version of Product Feed PRO where this issue has been resolved by the vendor. In addition to updating, administrators should implement web application firewalls configured with rules capable of detecting and blocking anomalous serialized data patterns or known malicious object injection signatures. It is also advisable to restrict file permissions on WordPress directories to prevent unauthorized modifications and to enforce strict role-based access control so that only trusted users can interact with plugin settings that involve data import or export features. Regular security audits and the use of static application security testing tools during development cycles can further help identify similar deserialization flaws before they are deployed into production environments, ensuring a more resilient defense posture against this class of vulnerabilities.