CVE-2025-60210 is a critical vulnerability affecting the Everest Forms - Frontend Listing WordPress plugin, specifically versions up to and including 1.0.5. The vulnerability arises from insecure deserialization of untrusted data, which allows attackers to perform object injection attacks. Object injection can lead to remote code execution, arbitrary file manipulation, or other malicious activities depending on the application context. This vulnerability requires no authentication or user interaction, making it highly exploitable remotely over the network. The CVSS 3.1 base score of 9.8 reflects its critical nature, with attack vector being network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), and no user interaction (UI:N). The impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H), meaning attackers can fully compromise affected systems. Everest Forms is a popular WordPress plugin used to create and manage forms with frontend listing capabilities, often deployed on business and organizational websites. The plugin’s deserialization flaw can be exploited by sending crafted serialized data to vulnerable endpoints, leading to object injection and subsequent malicious code execution or data compromise. No patches or exploit details are currently published, but the vulnerability is publicly disclosed and should be treated as urgent.

For European organizations, this vulnerability poses a severe risk to websites running the Everest Forms - Frontend Listing plugin. Exploitation can lead to complete system compromise, including unauthorized data access, data manipulation, website defacement, or service disruption. Organizations handling sensitive customer data, financial information, or critical business operations through WordPress sites are particularly vulnerable. The attack can be launched remotely without authentication, increasing the likelihood of widespread exploitation. Compromised sites can also be used as pivot points for lateral movement within corporate networks or for launching further attacks such as ransomware. The reputational damage and regulatory consequences under GDPR for data breaches caused by this vulnerability could be significant. Additionally, the availability impact could disrupt business continuity and online services.

1. Immediately update the Everest Forms - Frontend Listing plugin to the latest patched version once available. Monitor vendor announcements for patch releases. 2. If patches are not yet available, disable or remove the vulnerable plugin from WordPress installations to eliminate exposure. 3. Restrict access to the plugin’s frontend listing endpoints via web application firewalls (WAFs) or network access controls to block suspicious or malformed serialized data payloads. 4. Implement input validation and sanitization at the application level to prevent unsafe deserialization. 5. Monitor web server and application logs for unusual requests or error patterns indicative of exploitation attempts. 6. Employ runtime application self-protection (RASP) or intrusion detection systems (IDS) to detect and block exploitation attempts. 7. Conduct regular backups and ensure recovery procedures are in place in case of compromise. 8. Educate web administrators about the risks of deserialization vulnerabilities and the importance of timely patching.