CVE-2024-50435 is a Remote File Inclusion (RFI) vulnerability identified in the Meta News WordPress theme developed by themehorse, affecting all versions up to and including 1.1.7. The vulnerability stems from improper control over the filename parameter used in PHP include or require statements, which allows an attacker to manipulate the input to include arbitrary remote files. This can lead to remote code execution on the server hosting the vulnerable WordPress site. The flaw typically occurs when user-supplied input is not properly validated or sanitized before being passed to PHP functions that include files, enabling attackers to specify a URL or path to malicious code hosted externally. Exploiting this vulnerability does not require authentication, making it accessible to unauthenticated remote attackers. Although no public exploits have been reported yet, the vulnerability is publicly disclosed, increasing the risk of exploitation. The impact of a successful attack includes full compromise of the web server, data theft, defacement, or pivoting to internal networks. The vulnerability affects a widely used content management system plugin/theme, increasing its potential attack surface. No official patches or updates are currently linked, so users must monitor vendor advisories or apply manual mitigations such as input validation and disabling remote URL includes in PHP configurations. The vulnerability was reserved and published in late October 2024 by Patchstack, with no CVSS score assigned yet.

The impact of CVE-2024-50435 is severe for organizations using the Meta News WordPress theme. Successful exploitation can result in remote code execution, allowing attackers to execute arbitrary commands on the web server. This can lead to complete system compromise, including unauthorized access to sensitive data, website defacement, deployment of malware or ransomware, and use of the compromised server as a pivot point for further attacks within the network. Given WordPress’s widespread use for business, media, and e-commerce websites, the vulnerability could disrupt business operations, damage brand reputation, and lead to regulatory compliance violations if sensitive customer data is exposed. The ease of exploitation without authentication and the ability to execute remote code significantly increase the threat level. Organizations with public-facing WordPress sites using this theme are at risk of automated scanning and exploitation attempts once the vulnerability becomes widely known.

To mitigate CVE-2024-50435, organizations should: 1) Immediately identify and inventory all WordPress sites using the Meta News theme version 1.1.7 or earlier. 2) Monitor the themehorse vendor site and trusted security advisories for official patches or updates addressing this vulnerability and apply them promptly. 3) If no patch is available, implement manual mitigations by reviewing and sanitizing all inputs used in include or require statements within the theme’s PHP code to prevent remote file inclusion. 4) Disable the PHP allow_url_include directive in the server’s php.ini configuration to prevent inclusion of remote files. 5) Employ Web Application Firewalls (WAFs) with rules to detect and block suspicious requests attempting to exploit file inclusion vulnerabilities. 6) Conduct regular security scans and penetration tests focused on RFI and LFI vulnerabilities. 7) Restrict file permissions and isolate the WordPress environment to limit the impact of a potential compromise. 8) Educate site administrators on the risks of installing untrusted themes and plugins and encourage use of themes from reputable sources with active maintenance.