CVE-2025-58891 is a vulnerability classified as Improper Control of Filename for Include/Require Statement in PHP programs, specifically affecting the AncoraThemes Sanger product up to version 1.24.0. This flaw allows a PHP Local File Inclusion (LFI) attack, where an attacker can manipulate the filename parameter used in include or require statements to load arbitrary files from the local filesystem. Such vulnerabilities arise when user input is not properly validated or sanitized before being used in file inclusion functions, enabling attackers to read sensitive files like configuration files, password stores, or source code, potentially leading to information disclosure or further exploitation. The CVSS v3.1 score of 8.2 indicates a high severity, with an attack vector of network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), high confidentiality impact (C:H), low integrity impact (I:L), and no availability impact (A:N). This means an unauthenticated attacker can remotely exploit the vulnerability without user interaction to gain access to sensitive data. Although no known exploits have been reported in the wild yet, the vulnerability's nature and severity make it a critical concern for any web application using the affected Sanger theme. The lack of available patches at the time of reporting underscores the need for immediate attention and mitigation by administrators. AncoraThemes Sanger is a PHP-based theme product, likely used in content management systems or e-commerce platforms, which are common targets for web attacks. The vulnerability could be leveraged to escalate attacks, including remote code execution if combined with other flaws or misconfigurations.

For European organizations, this vulnerability poses a significant risk of data leakage and potential compromise of web servers running the affected Sanger theme. Confidential information such as database credentials, user data, or internal configuration files could be exposed, leading to privacy violations and regulatory non-compliance under GDPR. The integrity impact is low but could be escalated if attackers chain this vulnerability with others to execute arbitrary code or pivot within the network. Availability is not directly impacted, but indirect effects such as service disruption from subsequent attacks are possible. Organizations relying on PHP-based CMS platforms or custom web applications using AncoraThemes Sanger are particularly vulnerable. The exposure could damage reputation, cause financial loss, and invite legal penalties. Given the high CVSS score and ease of exploitation without authentication, the threat is urgent and requires immediate mitigation to protect European digital assets and customer data.

1. Monitor AncoraThemes official channels and security advisories for patches addressing CVE-2025-58891 and apply them immediately upon release. 2. Until patches are available, implement strict input validation and sanitization on all parameters that influence file inclusion, ensuring only allowed filenames or paths are accepted. 3. Employ web application firewalls (WAFs) with rules designed to detect and block attempts to exploit LFI vulnerabilities, such as suspicious traversal sequences or unexpected file inclusion patterns. 4. Conduct code reviews and security audits of the PHP applications using the Sanger theme to identify and remediate unsafe include/require usage. 5. Restrict file system permissions to limit the web server's access to sensitive files, minimizing the impact if an attacker exploits the vulnerability. 6. Use PHP configuration directives like open_basedir to confine file operations to specific directories. 7. Implement logging and monitoring to detect anomalous access patterns indicative of exploitation attempts. 8. Educate development and operations teams about secure coding practices related to file inclusion and input handling.