CVE-2025-58958 is a Remote File Inclusion (RFI) vulnerability found in the ThemeMove SmilePure WordPress theme, affecting all versions prior to 1.8.5. The vulnerability arises from improper control over the filename parameter used in PHP include or require statements. This flaw allows an attacker to supply a malicious remote URL that the PHP interpreter will include and execute, resulting in arbitrary code execution on the server. The vulnerability requires no authentication or user interaction, making it highly exploitable remotely over the network. The CVSS 3.1 base score is 8.2, reflecting low attack complexity, no privileges required, and a significant impact on integrity with partial confidentiality loss and no availability impact. Exploitation could lead to website defacement, data theft, or use of the compromised server as a pivot point for further attacks. Although no public exploits have been reported yet, the nature of RFI vulnerabilities makes them attractive targets for attackers. The vulnerability affects the SmilePure theme, which is used by WordPress sites, a popular CMS platform globally. The issue was reserved in early September 2025 and published in late October 2025, with no official patches linked yet, so users must monitor vendor updates closely. The vulnerability is categorized under improper input validation and insecure file inclusion, common issues in PHP-based web applications.

For European organizations, this vulnerability poses a significant risk due to the widespread use of WordPress and the popularity of ThemeMove themes in the region. Successful exploitation can lead to unauthorized code execution, allowing attackers to manipulate website content, steal sensitive data, or deploy malware. This can damage brand reputation, lead to regulatory non-compliance (e.g., GDPR breaches), and cause financial losses. Public-facing websites are especially vulnerable, and compromised servers can be leveraged for further attacks within corporate networks. The lack of required authentication and user interaction increases the likelihood of automated exploitation attempts. Organizations in sectors such as e-commerce, media, and government, which rely heavily on WordPress, are at higher risk. The impact extends beyond the website itself, potentially affecting backend systems if attackers gain deeper access. Given the high CVSS score and the critical nature of web presence, the threat is substantial for European entities.

Immediate mitigation involves updating the SmilePure theme to version 1.8.5 or later once available. Until an official patch is released, organizations should implement manual code reviews and sanitize all inputs controlling file inclusion paths to prevent remote URLs from being included. Employing web application firewalls (WAFs) with rules to block suspicious include requests can provide temporary protection. Disabling allow_url_include in PHP configurations reduces the risk of remote file inclusion. Regularly scanning websites for unauthorized changes and monitoring logs for unusual requests related to file inclusion parameters is essential. Organizations should also audit their WordPress installations for outdated themes and plugins and remove unused components. Educating developers and administrators about secure coding practices around file inclusion is recommended to prevent similar vulnerabilities. Finally, maintaining offline backups and incident response plans ensures readiness in case of compromise.