CVE-2025-39387 is a vulnerability classified under CWE-98, which pertains to improper control of filenames used in include or require statements within PHP programs. Specifically, this vulnerability affects the WPoperation Opstore plugin, versions up to and including 1.4.5. The vulnerability allows for PHP Local File Inclusion (LFI), a type of attack where an attacker can manipulate the filename parameter in the include or require statement to load unintended files from the local server. This can lead to unauthorized disclosure of sensitive files, such as configuration files, source code, or other data stored on the server. Although the description mentions 'PHP Remote File Inclusion,' the actual impact is local file inclusion, which is generally less severe than remote file inclusion but still significant. The vulnerability arises because the application does not properly validate or sanitize user-supplied input used in file inclusion functions, allowing an attacker to specify arbitrary file paths. Exploitation does not require authentication, and no user interaction is needed beyond sending crafted HTTP requests. As of the publication date (April 24, 2025), no known exploits have been observed in the wild, and no patches have been released. The vulnerability affects the Opstore plugin, which is used in WordPress environments to provide e-commerce functionalities. Given the nature of WordPress plugins, this vulnerability could be present on many websites using Opstore, especially if they have not updated or applied mitigations. The vulnerability's exploitation could lead to information disclosure, potential code execution if combined with other vulnerabilities, and compromise of the affected web server's confidentiality and integrity.

For European organizations, the impact of this vulnerability can be significant, especially for those relying on WordPress-based e-commerce platforms using the Opstore plugin. Successful exploitation could lead to unauthorized access to sensitive data such as customer information, payment details, and internal configuration files. This could result in data breaches, regulatory non-compliance (e.g., GDPR violations), reputational damage, and financial losses. Additionally, attackers could leverage the information gained through LFI to further escalate privileges or execute arbitrary code, potentially leading to full server compromise. Organizations in sectors with high-value data, such as retail, finance, and healthcare, are particularly at risk. The medium severity rating reflects that while the vulnerability does not directly allow remote code execution, the potential for information disclosure and subsequent attacks remains substantial. The lack of authentication requirements and user interaction makes exploitation easier, increasing the risk profile. Given the widespread use of WordPress in Europe and the popularity of e-commerce solutions, many small to medium enterprises could be vulnerable if they use Opstore and have not updated or mitigated the issue.

1. Immediate audit of all WordPress installations to identify the presence of the Opstore plugin and verify its version. 2. Since no official patch is currently available, implement manual mitigations such as disabling or removing the Opstore plugin until a patch is released. 3. Employ web application firewalls (WAFs) with custom rules to detect and block suspicious requests attempting to exploit file inclusion, such as those containing directory traversal sequences or unusual file path parameters. 4. Harden PHP configurations by disabling dangerous functions like 'allow_url_include' and restricting file system access using open_basedir directives to limit accessible directories. 5. Monitor web server logs for abnormal requests targeting file inclusion parameters or unusual error messages indicative of attempted exploitation. 6. Educate development and IT teams about secure coding practices, emphasizing input validation and sanitization for file inclusion operations. 7. Prepare for rapid deployment of official patches once released by WPoperation and test updates in staging environments before production rollout. 8. Consider implementing intrusion detection systems (IDS) to alert on potential exploitation attempts. 9. Regularly back up website data and configurations to enable quick recovery in case of compromise.