CVE-2026-93938 in Hogwords Plugin
Summary
by MITRE • 10/10/2026
Deserialization of Untrusted Data vulnerability in ThemeREX Group Hogwords hogwords allows Object Injection.This issue affects Hogwords: from n/a through 1.2.7.
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Analysis
by VulDB Data Team • 10/10/2026
The identified security flaw represents a critical deserialization vulnerability within the Hogwords theme developed by ThemeREX Group, specifically affecting versions ranging from initial releases up to version 1.2.7. This type of vulnerability arises when an application accepts untrusted data and processes it as part of its internal logic without adequate validation or sanitization. In this specific context, the flaw allows for Object Injection, a severe category of insecure deserialization where attackers can manipulate serialized objects to execute arbitrary code on the target server. The root cause typically lies in the use of programming language features that automatically reconstruct object states from serialized data streams, such as PHP's unserialize function or Java's readObject method, without verifying the integrity or origin of the incoming payload. When an application trusts this input blindly, it creates a pathway for malicious actors to inject crafted objects that exploit internal class methods and properties.
The operational impact of this vulnerability is profound, potentially leading to complete system compromise. By leveraging Object Injection, an attacker can achieve Remote Code Execution (RCE), which allows them to run arbitrary commands on the web server hosting the vulnerable application. This level of access enables the theft of sensitive data, including user credentials, database contents, and proprietary information stored within the WordPress environment. Furthermore, attackers may use this foothold to install backdoors, launch distributed denial-of-service attacks using the compromised host as a botnet node, or pivot into other systems on the internal network. The severity is compounded by the fact that web themes are often widely deployed across numerous websites, meaning a single vulnerability can impact hundreds or thousands of installations simultaneously if left unpatched.
From a classification perspective, this issue aligns with CWE-502, which denotes Deserialization of Untrusted Data. This weakness occurs when an application deserializes data from an untrusted source without ensuring that the data has not been tampered with or contains malicious payloads. Additionally, in terms of attack tactics and techniques, this vulnerability facilitates Initial Access and Execution phases within the MITRE ATT&CK framework. Attackers often utilize serialized objects to bypass traditional input validation mechanisms because the payload is encoded in a format that appears benign until it is processed by the application's runtime environment. The exploitation typically involves crafting specific binary or text-based payloads that trigger dangerous functions during the deserialization process, such as invoking system commands or accessing restricted file paths.
Mitigation strategies must focus on immediate remediation and long-term defensive posture improvements. The primary and most effective solution is to upgrade the Hogwords theme to a version later than 1.2.7, where ThemeREX Group has presumably addressed this insecure deserialization logic. If upgrading is not immediately feasible, administrators should implement strict input validation by whitelisting allowed data types and rejecting any serialized objects that do not match expected structures. Disabling dangerous functions or classes involved in the serialization process can also reduce the attack surface. Furthermore, organizations should employ Web Application Firewalls configured to detect patterns associated with deserialization attacks and monitor server logs for unusual activity indicative of exploitation attempts. Regular security audits and code reviews focusing on data handling practices are essential to prevent similar vulnerabilities from being introduced in future updates or other components of the application stack.