CVE-2025-32921 is a vulnerability classified under CWE-98, which involves improper control of filenames used in include or require statements within PHP programs. Specifically, this vulnerability affects the WPoperation Arrival plugin, versions up to and including 1.4.5. The flaw allows for PHP Local File Inclusion (LFI), where an attacker can manipulate the filename parameter in such a way that arbitrary files on the server can be included and executed by the PHP interpreter. This can lead to unauthorized code execution, disclosure of sensitive files, or server compromise. The vulnerability arises because the plugin does not adequately validate or sanitize user-supplied input used in include/require statements, allowing attackers to traverse directories or specify unintended files. Although the vulnerability is described as a Local File Inclusion rather than Remote File Inclusion, the impact remains significant as it can be exploited to read sensitive configuration files, execute arbitrary PHP code if combined with other vulnerabilities or misconfigurations, or escalate privileges. No known public exploits have been reported yet, and no patches have been linked at the time of this report. The vulnerability was reserved and published in April 2025, indicating it is a recent discovery. The absence of a CVSS score necessitates an independent severity assessment based on the technical details and potential impact.

For European organizations, the impact of this vulnerability can be substantial, especially for those using the WPoperation Arrival plugin in their WordPress environments. Successful exploitation could lead to unauthorized disclosure of sensitive data such as configuration files, database credentials, or user information, potentially violating GDPR and other data protection regulations. Additionally, attackers could execute arbitrary PHP code, leading to full server compromise, defacement, or use of the server as a pivot point for further attacks within the network. This could disrupt business operations, damage reputation, and incur regulatory penalties. Organizations relying on WordPress for critical services or e-commerce platforms are particularly at risk. Given the widespread use of WordPress across Europe, the vulnerability could affect a broad range of sectors including government, finance, healthcare, and retail. The lack of known exploits currently reduces immediate risk, but the vulnerability’s nature means it could be weaponized quickly once exploit code becomes available.

1. Immediate audit of all WordPress installations to identify the presence of the WPoperation Arrival plugin and confirm version numbers. 2. If the plugin is found, disable it temporarily until a patch or update is available. 3. Implement strict input validation and sanitization on all user inputs that influence file inclusion or require/include statements, ideally by restricting inputs to a whitelist of allowed filenames or paths. 4. Employ Web Application Firewalls (WAFs) with rules designed to detect and block attempts at directory traversal or file inclusion attacks targeting PHP applications. 5. Monitor server logs for suspicious requests that attempt to manipulate file inclusion parameters. 6. Restrict PHP file permissions and disable potentially dangerous PHP functions such as 'include', 'require', or 'allow_url_include' where feasible. 7. Maintain regular backups and ensure incident response plans are updated to handle potential exploitation scenarios. 8. Stay informed about updates from WPoperation and apply patches promptly once released. 9. Conduct penetration testing focused on file inclusion vulnerabilities to identify and remediate similar issues proactively.