CVE-2025-59555 is a vulnerability classified as 'Improper Control of Filename for Include/Require Statement in PHP Program,' commonly known as a PHP Remote File Inclusion (RFI) flaw, found in the ThemeMove Medizin WordPress theme. This vulnerability exists because the theme improperly validates or sanitizes user-supplied input used in PHP include or require statements, allowing attackers to specify remote files to be included and executed by the server. The affected versions are all prior to 1.9.7, with no specific initial version identified. The vulnerability has a CVSS v3.1 base score of 8.1, indicating high severity, with the vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. This means the attack can be launched remotely over the network without authentication or user interaction, but requires high attack complexity. Successful exploitation allows attackers to execute arbitrary PHP code on the server, leading to full compromise including data theft, website defacement, malware deployment, or denial of service. Although no known exploits are currently reported in the wild, the nature of RFI vulnerabilities historically makes them attractive targets. The vulnerability was reserved in September 2025 and published in October 2025 by Patchstack. No official patches or mitigations are linked yet, but upgrading to version 1.9.7 or later (once available) is expected to resolve the issue. The vulnerability affects the confidentiality, integrity, and availability of affected systems, making it critical for web servers running the Medizin theme.

For European organizations, this vulnerability poses significant risks, especially those relying on WordPress websites using the ThemeMove Medizin theme. Exploitation can lead to unauthorized remote code execution, enabling attackers to steal sensitive data, manipulate website content, implant backdoors, or disrupt services. This can result in reputational damage, regulatory non-compliance (e.g., GDPR breaches), financial losses, and operational downtime. Sectors such as healthcare, finance, e-commerce, and government agencies that use WordPress themes for public-facing websites are particularly vulnerable. The remote nature of the attack vector increases the likelihood of exploitation from anywhere, including hostile actors targeting European infrastructure. Additionally, compromised websites can be used as launchpads for further attacks within corporate networks or to distribute malware to European users. The high attack complexity somewhat limits exploitation but does not eliminate the threat, especially if attackers develop automated tools. The absence of known exploits currently provides a window for proactive defense but should not lead to complacency.

1. Immediately monitor for updates from ThemeMove and apply the patch for Medizin version 1.9.7 or later as soon as it becomes available. 2. Until patches are applied, implement strict input validation and sanitization on all user-supplied parameters that influence include or require statements in PHP code. 3. Disable allow_url_include and allow_url_fopen directives in PHP configurations to prevent remote file inclusion. 4. Employ Web Application Firewalls (WAFs) with rules specifically designed to detect and block RFI attack patterns targeting PHP include parameters. 5. Conduct code audits on customizations of the Medizin theme to ensure no unsafe dynamic includes exist. 6. Restrict file permissions on web servers to limit the impact of potential code execution. 7. Monitor web server logs for suspicious requests attempting to exploit include parameters. 8. Educate web administrators about the risks of RFI and the importance of timely patching. 9. Consider isolating WordPress installations in containerized or sandboxed environments to reduce lateral movement if compromised. 10. Regularly back up website data and configurations to enable rapid recovery in case of compromise.