CVE-2026-104399 in Motors Plugin
Summary
by MITRE • 10/06/2026
Insertion of Sensitive Information Into Sent Data vulnerability in StylemixThemes Motors allows Retrieve Embedded Sensitive Data.
This issue affects Motors: from n/a through 1.4.124.
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Analysis
by VulDB Data Team • 10/06/2026
The identified vulnerability represents a critical failure in data handling practices within the StylemixThemes Motors plugin, specifically categorized under CWE-359 which denotes exposure of sensitive information to an unauthorized actor. This flaw manifests when the application transmits or logs data containing confidential details without adequate sanitization or encryption mechanisms. In the context of web applications and plugins like Motors, this typically involves the leakage of database credentials, user session tokens, internal API keys, or personally identifiable information through HTTP headers, error messages, or unencrypted network traffic. The vulnerability allows attackers to retrieve embedded sensitive data that was not intended for public consumption, thereby compromising the confidentiality integrity of the system.
From a technical perspective, this issue often stems from improper input validation and output encoding practices where developer assumptions about trust boundaries are violated. When the plugin processes user inputs or interacts with external services, it may inadvertently include debug information, stack traces, or raw database query results in its responses. These outputs can be intercepted by malicious actors using standard network analysis tools such as Wireshark or Burp Suite. The presence of sensitive data in sent packets indicates a lack of strict adherence to the principle of least privilege and insufficient filtering logic before data transmission occurs. This exposure creates a direct pathway for information disclosure, which serves as an initial foothold for more sophisticated attacks including credential stuffing, session hijacking, or further enumeration of the underlying infrastructure.
The operational impact of this vulnerability is severe, particularly given its prevalence in versions from n/a through 1.4.124. By allowing the retrieval of embedded sensitive data, attackers can gain unauthorized access to administrative accounts if credentials are exposed during authentication processes. Furthermore, exposure of internal system details facilitates targeted attacks against specific components of the WordPress ecosystem or associated third-party services integrated with Motors. This compromises not only the immediate site but potentially extends to downstream systems that rely on shared secrets or tokens managed by the plugin. The breach erodes trust among users and administrators while exposing the organization to regulatory penalties under data protection frameworks such as GDPR or CCPA due to the mishandling of personal information.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. Administrators should immediately update the StylemixThemes Motors plugin to a version newer than 1.4.124 where this flaw has been addressed by the vendor through enhanced data sanitization protocols. In cases where updating is not feasible, implementing strict Web Application Firewall rules can help filter out anomalous requests that attempt to exploit information leakage vectors. Developers must enforce rigorous code review processes aligned with OWASP Top 10 guidelines, specifically focusing on secure coding practices for data transmission and storage. Additionally, enabling comprehensive logging and monitoring allows security teams to detect unusual patterns of data exfiltration early. Regular penetration testing should be conducted to identify similar weaknesses in other plugins or custom modules within the environment, ensuring a holistic approach to vulnerability management that aligns with industry standards like NIST SP 800-53 for information system security controls.