CVE-2025-60237 in Finag Plugin
Summary
by MITRE • 03/19/2026
Deserialization of Untrusted Data vulnerability in Themeton Finag allows Object Injection.This issue affects Finag: from n/a through 1.5.0.
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Analysis
by VulDB Data Team • 03/19/2026
The vulnerability identified as CVE-2025-60237 represents a critical deserialization flaw in the Themeton Finag plugin, specifically impacting versions ranging from an unspecified initial version through 1.5.0. This issue manifests as a deserialization of untrusted data vulnerability that enables object injection attacks, creating a significant security risk for affected systems. The flaw resides in how the plugin processes serialized data from external sources, failing to properly validate or sanitize input before deserializing objects. Such vulnerabilities typically arise when applications deserialize data without adequate security controls, allowing attackers to craft malicious serialized objects that can execute arbitrary code during the deserialization process. The impact extends beyond simple data corruption as it can potentially lead to complete system compromise, unauthorized access, and data exfiltration.
The technical implementation of this vulnerability follows established patterns seen in similar deserialization attacks where attackers can manipulate serialized data structures to inject malicious objects. When the Finag plugin processes untrusted input containing serialized objects, the application's deserialization mechanism fails to verify the integrity or authenticity of the data source. This weakness creates an attack surface where malicious actors can construct specially crafted serialized payloads that, when processed by the vulnerable plugin, trigger unintended execution paths. The vulnerability aligns with CWE-502 which specifically addresses deserialization of untrusted data, making it a well-documented and dangerous class of security flaw. Attackers can leverage this vulnerability through various vectors including web application interfaces, API endpoints, or any mechanism that accepts serialized data input from external sources.
The operational impact of CVE-2025-60237 extends beyond immediate exploitation capabilities to encompass broader system compromise potential. Successful exploitation can enable attackers to execute arbitrary commands on the affected system, potentially leading to full administrative control over the WordPress installation. This vulnerability particularly affects WordPress environments where the Finag plugin is installed, as it represents a critical entry point for attackers seeking to escalate privileges or establish persistent access. The attack surface is significant given that WordPress remains one of the most widely deployed content management systems, making vulnerable installations common targets for automated exploitation attempts. Organizations running affected versions face risks of data breaches, service disruption, and potential regulatory compliance violations due to the severity of the vulnerability.
Mitigation strategies for CVE-2025-60237 require immediate action to address the root cause through software updates and configuration hardening. The primary recommendation involves upgrading to the latest available version of the Themeton Finag plugin where the vulnerability has been patched. System administrators should also implement input validation and sanitization measures to prevent untrusted data from reaching the deserialization layer. Security controls should include disabling unnecessary serialization functionality, implementing proper access controls, and monitoring for suspicious deserialization activities. Network-level protections such as web application firewalls can help detect and block malicious payloads attempting to exploit this vulnerability. Organizations should also conduct comprehensive vulnerability assessments to identify other potential deserialization flaws within their systems, as these vulnerabilities often exist in multiple components and can be exploited in combination. The remediation process should include thorough testing of patched versions to ensure that security updates do not introduce regressions or compatibility issues within the affected applications.