CVE-2025-9985 in Featured Image from URL FIFU Plugin
Summary
by MITRE • 09/26/2025
The Featured Image from URL (FIFU) plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 5.2.7 through publicly exposed log files. This makes it possible for unauthenticated attackers to view potentially sensitive information contained in the exposed log files.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 09/26/2025
The Featured Image from URL plugin for WordPress presents a critical security vulnerability classified as sensitive information exposure through publicly accessible log files. This vulnerability affects all versions up to and including 5.2.7, creating an avenue for unauthenticated attackers to access potentially sensitive data that should remain protected within the system's logging infrastructure. The flaw resides in the plugin's improper handling of log file access controls, allowing malicious actors to directly retrieve log files that contain information not intended for public consumption.
The technical implementation of this vulnerability stems from inadequate access controls and improper file permissions within the plugin's logging mechanism. When the plugin generates log files containing system operations, user activities, or configuration details, these files are not properly secured against public access. The exposed log files may contain database connection strings, API keys, user credentials, or other sensitive operational data that could be leveraged for further attacks. This represents a direct violation of information security principles and demonstrates poor secure coding practices that align with CWE-200, which addresses improper exposure of sensitive information.
The operational impact of this vulnerability extends beyond simple information disclosure, as the exposed data could enable attackers to conduct more sophisticated attacks against the WordPress installation. An attacker who gains access to these log files can potentially identify system configurations, user patterns, and operational details that facilitate privilege escalation or lateral movement within the affected environment. The vulnerability's unauthenticated nature means that any external party can exploit this weakness without requiring valid credentials, making it particularly dangerous in public-facing web applications. This exposure creates opportunities for attackers to map the target environment and identify additional attack vectors that could compromise the entire WordPress installation.
Security practitioners should immediately implement mitigations including restricting access to log files through web server configuration, implementing proper file permissions, and ensuring that logging mechanisms do not expose sensitive information in their output. The recommended approach involves configuring the web server to deny access to log file directories and implementing proper log rotation with appropriate access controls. Additionally, organizations should consider implementing web application firewalls to monitor and block access attempts to potentially sensitive file paths. This vulnerability demonstrates the importance of following the principle of least privilege and proper input validation, as outlined in the ATT&CK framework's defense evasion and credential access techniques. The exposure of sensitive information through improperly secured log files represents a fundamental security oversight that requires immediate remediation to prevent potential exploitation by threat actors.