CVE-2025-28992 is a high-severity vulnerability categorized under CWE-98, which involves improper control of filenames used in PHP include or require statements. This vulnerability affects the SNS Anton theme developed by snstheme, specifically versions up to 4.1. The flaw allows an attacker to perform a PHP Local File Inclusion (LFI) attack by manipulating the filename parameter used in include or require statements without proper validation or sanitization. This can lead to the inclusion and execution of arbitrary local files on the web server. The vulnerability is remotely exploitable over the network without requiring authentication or user interaction, but it has a high attack complexity, indicating that some conditions must be met for successful exploitation. The CVSS v3.1 base score is 8.1, reflecting high impact on confidentiality, integrity, and availability. Exploiting this vulnerability could allow an attacker to read sensitive files, execute arbitrary PHP code, or cause denial of service by including malicious or unintended files. No public exploits are currently known in the wild, and no patches have been linked yet. The vulnerability was reserved in March 2025 and published in June 2025, indicating recent discovery and disclosure. SNS Anton is a WordPress theme, and such themes are commonly used in content management systems, making this vulnerability relevant to websites using this theme. The improper control of file inclusion is a critical security issue in PHP applications, often leading to server compromise if exploited successfully.

For European organizations using the SNS Anton theme on their WordPress sites, this vulnerability poses a significant risk. Successful exploitation could lead to unauthorized disclosure of sensitive information, such as configuration files, credentials, or customer data, violating GDPR and other data protection regulations. It could also allow attackers to execute arbitrary code on the web server, potentially leading to full server compromise, defacement, or use of the server as a pivot point for further attacks within the organization's network. The availability of affected websites could be disrupted, impacting business operations and reputation. Given the high confidentiality, integrity, and availability impacts, organizations could face regulatory penalties, loss of customer trust, and financial damage. The lack of known exploits in the wild currently provides a window for proactive mitigation, but the high CVSS score indicates that once exploits emerge, the threat will be severe. Organizations relying on this theme for public-facing websites or e-commerce platforms are particularly at risk, as attackers often target such assets for maximum impact.

European organizations should immediately audit their WordPress installations to identify the use of the SNS Anton theme, especially versions up to 4.1. Until an official patch is released, organizations should consider the following specific mitigations: 1) Disable or restrict the use of the vulnerable include/require functionality by applying web application firewall (WAF) rules that detect and block suspicious requests attempting to manipulate file inclusion parameters. 2) Implement strict input validation and sanitization at the application or server level to prevent malicious filename inputs. 3) Restrict file system permissions for the web server user to limit access to sensitive files that could be included maliciously. 4) Employ runtime application self-protection (RASP) solutions to detect and block exploitation attempts in real time. 5) Monitor web server logs for unusual access patterns or errors related to file inclusion. 6) Consider temporarily disabling or replacing the SNS Anton theme with a secure alternative until a vendor patch is available. 7) Stay updated with vendor advisories and apply patches promptly once released. These measures go beyond generic advice by focusing on immediate containment and layered defenses specific to file inclusion vulnerabilities in PHP-based WordPress themes.