CVE-2025-53339 is a high-severity vulnerability classified under CWE-98, which pertains to improper control of filenames used in include or require statements in PHP programs. Specifically, this vulnerability affects the 'Devnex Addons For Elementor' plugin, versions up to 1.0.9. The flaw allows an attacker to perform PHP Local File Inclusion (LFI), which means that the application improperly validates or sanitizes user input that controls the filename parameter in PHP include or require functions. This can lead to the inclusion and execution of arbitrary local files on the server. Although the description mentions 'PHP Remote File Inclusion' in the title, the technical details clarify that the vulnerability enables Local File Inclusion, which is still critical as it can allow attackers to read sensitive files, execute arbitrary code, or escalate privileges depending on the server configuration. The CVSS v3.1 score of 7.5 reflects a high severity, with attack vector being network-based (AV:N), requiring high attack complexity (AC:H), low privileges (PR:L), no user interaction (UI:N), and impacting confidentiality, integrity, and availability at a high level (C:H/I:H/A:H). No known exploits are reported in the wild yet, and no patches have been linked, indicating that the vulnerability is newly disclosed. The vulnerability affects the Devnex Addons For Elementor plugin, which is used within WordPress environments to extend Elementor page builder functionality. The improper control of filename input in PHP include/require statements can allow attackers to read sensitive configuration files, execute arbitrary PHP code if combined with other vulnerabilities or misconfigurations, and potentially take over the affected web server or website. Given that Elementor is widely used in WordPress sites, and Devnex Addons is an add-on plugin, the attack surface includes websites using this plugin, which may be smaller or medium-sized business sites or personal blogs relying on these extensions. The high attack complexity suggests some conditions must be met to exploit, but the low privilege requirement and no user interaction make it a significant risk once those conditions are met.

For European organizations, this vulnerability poses a significant risk to websites and web applications built on WordPress using the Devnex Addons For Elementor plugin. Successful exploitation could lead to unauthorized disclosure of sensitive data such as configuration files, credentials, or personal data protected under GDPR, resulting in compliance violations and potential fines. Integrity of website content and backend systems could be compromised, allowing attackers to inject malicious code, deface websites, or use the compromised server as a pivot point for further attacks within the organization's network. Availability could also be impacted if attackers execute denial-of-service conditions or disrupt normal operations. Organizations relying on this plugin for customer-facing websites, e-commerce, or internal portals may face reputational damage and operational disruptions. The lack of patches at the time of disclosure increases the urgency for mitigation. Additionally, the high confidentiality and integrity impact could affect sectors with sensitive data such as finance, healthcare, and government services in Europe. The vulnerability's exploitation could also facilitate further attacks such as ransomware deployment or lateral movement, amplifying the overall impact.

1. Immediate mitigation should include disabling or uninstalling the Devnex Addons For Elementor plugin until a security patch is released. 2. Monitor official vendor channels and security advisories for patches or updates addressing CVE-2025-53339 and apply them promptly. 3. Implement Web Application Firewall (WAF) rules to detect and block suspicious requests attempting to exploit file inclusion vulnerabilities, focusing on patterns that manipulate include/require parameters. 4. Conduct thorough code reviews and input validation audits on any custom or third-party plugins to ensure proper sanitization of user inputs controlling file paths. 5. Restrict PHP include paths and disable allow_url_include and allow_url_fopen directives in PHP configuration to reduce risk of file inclusion attacks. 6. Employ the principle of least privilege for web server and application file permissions to limit the impact of any file inclusion exploitation. 7. Regularly back up website data and configurations to enable rapid recovery in case of compromise. 8. Use security plugins that can detect anomalies or unauthorized file changes within WordPress environments. 9. Educate development and IT teams about the risks of file inclusion vulnerabilities and secure coding practices. 10. For organizations with mature security operations, implement monitoring for anomalous file access or execution patterns indicative of exploitation attempts.