CVE-2025-60210 is a deserialization of untrusted data vulnerability found in the Everest Forms - Frontend Listing WordPress plugin, specifically affecting versions up to 1.0.5. Deserialization vulnerabilities occur when untrusted data is processed by an application’s deserialization mechanism, allowing attackers to inject malicious objects. In this case, the flaw allows unauthenticated remote attackers to perform object injection, which can lead to arbitrary code execution, privilege escalation, data theft, or denial of service. The vulnerability is exploitable remotely without any authentication or user interaction, making it highly dangerous. The CVSS v3.1 base score of 9.8 reflects the critical nature of this issue, with network attack vector, low attack complexity, no privileges required, and no user interaction needed. The impact covers confidentiality, integrity, and availability, indicating potential full system compromise. Although no public exploits are reported yet, the vulnerability is publicly disclosed and should be considered a high-risk threat. The plugin is commonly used in WordPress environments to manage frontend form listings, and its compromise could affect websites’ functionality and data security. The lack of available patches at the time of disclosure necessitates immediate mitigation efforts by administrators.

For European organizations, this vulnerability poses a significant risk to websites using the Everest Forms - Frontend Listing plugin. Exploitation could lead to unauthorized access to sensitive data, website defacement, injection of malicious content, or complete takeover of the web server hosting the WordPress site. This can disrupt business operations, damage reputation, and lead to regulatory non-compliance, especially under GDPR where personal data exposure is involved. The ease of exploitation and lack of required authentication increase the likelihood of attacks, potentially affecting a wide range of sectors including e-commerce, government portals, educational institutions, and media outlets. The availability of critical services could be impacted by denial of service or ransomware deployment following exploitation. Additionally, compromised sites could be used as launchpads for further attacks within organizational networks or for distributing malware to European users.

1. Immediately audit all WordPress sites for the presence of the Everest Forms - Frontend Listing plugin and identify affected versions (<=1.0.5). 2. Apply vendor patches as soon as they become available; monitor official wpeverest channels and security advisories. 3. In the absence of patches, disable or uninstall the vulnerable plugin to eliminate exposure. 4. Implement strict input validation and sanitization on all data inputs related to the plugin to prevent malicious serialized object injection. 5. Deploy Web Application Firewalls (WAFs) with custom rules to detect and block deserialization attack patterns targeting this plugin. 6. Monitor web server and application logs for unusual activity or exploitation attempts related to deserialization. 7. Conduct regular vulnerability scans and penetration tests focusing on WordPress plugins. 8. Educate site administrators on the risks of untrusted data deserialization and the importance of timely updates. 9. Consider isolating WordPress environments and restricting permissions to limit impact if compromise occurs.