CVE-2025-58891 is a Local File Inclusion (LFI) vulnerability found in the AncoraThemes Sanger WordPress theme, affecting versions up to 1.24.0. The vulnerability arises from improper control over the filename parameter used in PHP include or require statements. This flaw allows an attacker to manipulate the file path input, causing the application to include unintended local files. Such inclusion can lead to disclosure of sensitive server files (e.g., configuration files, password stores) or potentially enable remote code execution if the attacker can upload malicious files or chain with other vulnerabilities. The vulnerability is classified as a PHP Remote File Inclusion type but specifically manifests as Local File Inclusion due to improper input validation. No CVSS score has been assigned yet, and no public exploits have been reported. The vulnerability was reserved in September 2025 and published in December 2025. The lack of patches or official fixes means that affected installations remain vulnerable. AncoraThemes Sanger is a WordPress theme used primarily for business and portfolio websites, which may contain sensitive client or organizational data. The exploitation requires no authentication and can be triggered remotely via crafted HTTP requests targeting vulnerable endpoints that process the include/require statements. This vulnerability poses a significant risk to web servers running the affected theme, potentially compromising confidentiality and integrity of data and availability if the server is destabilized.

For European organizations, the impact of CVE-2025-58891 can be substantial. Many businesses and institutions rely on WordPress for their web presence, and themes like Sanger are popular for their design and functionality. Exploitation could lead to unauthorized disclosure of sensitive internal files such as configuration files containing database credentials, private keys, or user data, resulting in data breaches and compliance violations under GDPR. Additionally, attackers might leverage this vulnerability to execute arbitrary code, leading to full server compromise, defacement, or use of the server as a pivot point for further attacks within the network. This can disrupt business operations, damage reputation, and incur regulatory penalties. The lack of authentication requirement and remote exploitability increases the risk profile. Organizations in sectors such as finance, healthcare, and government, which often host sensitive data on WordPress sites, are particularly vulnerable. The potential for lateral movement and persistence within networks also raises concerns for critical infrastructure and supply chain security in Europe.

1. Immediate audit of all WordPress installations to identify use of the AncoraThemes Sanger theme, especially versions <= 1.24.0. 2. Disable or restrict access to vulnerable endpoints that process include/require statements until a patch is available. 3. Implement Web Application Firewall (WAF) rules to detect and block suspicious requests attempting to exploit file inclusion, such as those containing directory traversal patterns or unusual file path parameters. 4. Restrict PHP file inclusion paths using open_basedir or similar PHP configuration directives to limit accessible directories. 5. Monitor web server logs for anomalous requests indicative of LFI attempts. 6. Segregate and harden web servers to minimize impact in case of compromise. 7. Regularly update WordPress core, themes, and plugins, and subscribe to vendor security advisories for timely patching once available. 8. Conduct penetration testing and vulnerability scanning focused on file inclusion vulnerabilities. 9. Educate web administrators and developers on secure coding practices to prevent similar vulnerabilities. 10. Consider temporary removal or replacement of the Sanger theme if immediate patching is not feasible.