CVE-2025-58890 is a vulnerability classified as Improper Control of Filename for Include/Require Statement in PHP, commonly known as a Remote File Inclusion (RFI) vulnerability, affecting the AncoraThemes Playful WordPress theme versions up to and including 1.19.0. The vulnerability stems from insufficient validation or sanitization of user-supplied input that is used in PHP include or require statements. This flaw allows an attacker to manipulate the filename parameter to include arbitrary files, potentially from remote locations if remote file inclusion is enabled, or local files on the server. Successful exploitation can lead to execution of malicious PHP code, enabling attackers to take control of the affected web server, steal sensitive data, deface websites, or pivot to other internal systems. Although no public exploits have been reported yet, the nature of RFI vulnerabilities makes them highly attractive targets for attackers due to their ease of exploitation and severe consequences. The vulnerability affects the AncoraThemes Playful theme, which is used in WordPress environments, a widely deployed content management system. The lack of a CVSS score indicates that the vulnerability is newly published and not yet fully assessed, but the technical characteristics point to a high-risk issue. The vulnerability was reserved in September 2025 and published in December 2025, indicating recent discovery and disclosure. No official patches or fixes have been linked yet, so users must rely on interim mitigations.

For European organizations, this vulnerability presents a significant threat, especially those relying on WordPress websites using the AncoraThemes Playful theme. Exploitation could lead to complete compromise of web servers, resulting in data breaches involving personal data protected under GDPR, reputational damage, and potential service outages. Attackers could deploy web shells, steal credentials, or manipulate website content, impacting business operations and customer trust. The impact extends to sectors with high web presence such as e-commerce, media, education, and government services. Given the widespread use of WordPress in Europe and the popularity of themes from AncoraThemes, the attack surface is considerable. Additionally, the vulnerability could be leveraged as a foothold for lateral movement within corporate networks. The absence of known exploits currently reduces immediate risk, but the vulnerability’s characteristics suggest rapid exploitation once public exploits emerge. Organizations failing to address this vulnerability may face regulatory scrutiny due to inadequate security controls protecting personal data.

Organizations should immediately audit their WordPress installations to identify the use of the AncoraThemes Playful theme and its version. Until an official patch is released, administrators should disable remote file inclusion in PHP configurations by setting 'allow_url_include' to 'Off' and 'allow_url_fopen' to 'Off' if not required. Implement strict input validation and sanitization on any user inputs that influence file inclusion paths. Employ Web Application Firewalls (WAFs) with rules to detect and block suspicious include/require patterns and attempts to access remote URLs. Restrict file permissions on the web server to limit the execution and reading of files outside intended directories. Monitor server and application logs for unusual requests or errors related to file inclusion. Consider temporarily switching to a different theme or disabling the vulnerable theme if feasible. Stay alert for official patches or updates from AncoraThemes and apply them promptly. Conduct regular security assessments and penetration tests focusing on file inclusion vulnerabilities. Educate development and IT teams about secure coding practices to prevent similar issues.