CVE-2025-67535 is a vulnerability classified as deserialization of untrusted data in the WP Maps plugin by WePlugins, a WordPress development company. The affected versions include all releases up to and including 4.8.6. Deserialization vulnerabilities occur when untrusted input is deserialized without proper validation, allowing attackers to inject malicious objects into the application’s memory. This can lead to object injection attacks, which may result in remote code execution, privilege escalation, or data manipulation. The WP Maps plugin integrates Google Maps functionality into WordPress sites, making it a popular choice for site owners needing geolocation features. Since WordPress powers a significant portion of websites globally, including many in Europe, this vulnerability poses a substantial risk. Although no public exploits are currently known, the vulnerability's nature means it could be exploited by attackers who craft malicious serialized payloads sent to the plugin’s deserialization routines. The lack of a CVSS score indicates this is a newly published vulnerability (December 2025) with limited public analysis. The vulnerability’s impact depends on the plugin’s exposure and the presence of vulnerable versions. Attackers do not require authentication to exploit this flaw, increasing its risk profile. The vulnerability was assigned by Patchstack, a known security entity focused on WordPress plugins. No official patches or mitigation links are currently available, emphasizing the need for vigilance and proactive defense by administrators.

For European organizations, the impact of CVE-2025-67535 can be significant. Exploitation could allow attackers to execute arbitrary code on web servers hosting vulnerable WP Maps plugins, potentially leading to full site compromise, data theft, defacement, or pivoting to internal networks. Organizations relying on WordPress for public-facing websites, especially those using WP Maps for location services, face risks to confidentiality, integrity, and availability. The vulnerability could disrupt business operations, damage reputation, and lead to regulatory compliance issues under GDPR if personal data is compromised. Small and medium enterprises using WordPress without dedicated security teams may be particularly vulnerable. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate it, as attackers often develop exploits rapidly after disclosure. The ease of exploitation without authentication and the widespread use of WordPress in Europe amplify the threat. Additionally, attackers could use compromised sites as launchpads for further attacks or to distribute malware, increasing the overall threat landscape.

1. Monitor official WePlugins and WP Maps channels for security patches and apply updates immediately once available. 2. Until a patch is released, consider disabling the WP Maps plugin or restricting its use to trusted users and environments. 3. Implement Web Application Firewalls (WAFs) with rules to detect and block suspicious serialized payloads or unusual POST requests targeting the plugin endpoints. 4. Conduct code reviews or employ security scanning tools to identify unsafe deserialization patterns in custom or third-party plugins. 5. Harden WordPress installations by limiting plugin permissions and isolating critical components to reduce the impact of potential exploitation. 6. Regularly back up website data and configurations to enable rapid recovery in case of compromise. 7. Educate site administrators about the risks of deserialization vulnerabilities and encourage prompt patching. 8. Employ network segmentation and monitoring to detect lateral movement if a compromise occurs. 9. Use intrusion detection systems (IDS) to alert on anomalous behavior related to plugin exploitation attempts. 10. Consider disabling PHP object deserialization functions if not required or use safer serialization formats such as JSON where feasible.