CVE-2026-27083 in Work & Travel Company Plugin
Summary
by MITRE • 03/25/2026
Deserialization of Untrusted Data vulnerability in ThemeREX Work & Travel Company work-travel-company allows Object Injection.This issue affects Work & Travel Company: from n/a through <= 1.2.
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Analysis
by VulDB Data Team • 04/01/2026
The CVE-2026-27083 vulnerability represents a critical deserialization flaw in the ThemeREX Work & Travel Company WordPress plugin, classified as a deserialization of untrusted data vulnerability under CWE-502. This weakness occurs when the plugin processes user-supplied data without proper validation or sanitization during the object reconstruction phase. The vulnerability specifically impacts versions of the work-travel-company plugin ranging from the initial release through version 1.2, creating a window of exposure for attackers to exploit this fundamental security weakness.
The technical flaw manifests when the plugin accepts serialized PHP objects from untrusted sources and directly deserializes them without adequate security controls. This process creates an object injection attack vector where malicious actors can craft specially formatted serialized data that, when processed by the vulnerable plugin, executes arbitrary code on the target system. The vulnerability stems from the plugin's failure to implement proper input validation and sanitization mechanisms during data processing, allowing attackers to inject malicious objects that can be executed within the plugin's context.
Operationally, this vulnerability presents a severe risk to WordPress installations using the affected plugin, as it enables remote code execution capabilities that can lead to complete system compromise. Attackers can leverage this weakness to upload malicious files, execute arbitrary commands, escalate privileges, and potentially establish persistent backdoors within the affected environment. The impact extends beyond individual plugin functionality to potentially affect the entire WordPress installation and underlying server infrastructure, making it particularly dangerous for websites hosting sensitive data or serving as part of larger web applications.
Mitigation strategies for CVE-2026-27083 should prioritize immediate remediation through plugin version updates to the latest secure release, as this represents the most effective approach to address the vulnerability. Organizations should also implement network-level protections such as firewall rules that restrict access to plugin endpoints and consider implementing Web Application Firewalls to detect and block malicious deserialization attempts. Additionally, regular security audits and input validation testing should be conducted to identify similar vulnerabilities in other components of the WordPress ecosystem, following ATT&CK framework techniques related to command and control and execution phases. System administrators should also monitor for suspicious activities and implement proper logging mechanisms to detect exploitation attempts. The vulnerability underscores the importance of secure coding practices and input validation in preventing object injection attacks, aligning with industry best practices for preventing deserialization vulnerabilities in web applications.