CVE-2025-30773 is a vulnerability in the Cozmoslabs TranslatePress WordPress plugin, specifically in versions up to and including 2.9.6. The issue stems from unsafe deserialization of untrusted data, which allows an attacker to perform object injection attacks. Deserialization vulnerabilities occur when untrusted input is deserialized without proper validation or sanitization, enabling attackers to inject malicious objects that can alter program flow or execute arbitrary code. In this case, the TranslatePress plugin's handling of serialized data is flawed, allowing exploitation that could lead to remote code execution or other malicious impacts such as privilege escalation or data tampering. The vulnerability is significant because TranslatePress is widely used for managing multilingual content on WordPress sites, making many websites potentially vulnerable. No CVSS score has been assigned yet, and no known exploits have been observed in the wild, but the vulnerability is publicly disclosed and published as of March 27, 2025. The lack of an official patch at the time of disclosure increases the urgency for mitigation. The vulnerability does not require prior authentication, increasing the attack surface. The technical details indicate the issue was reserved and published by Patchstack, a known security entity for WordPress plugins. This vulnerability highlights the risks associated with insecure deserialization in web applications and plugins.

The impact of CVE-2025-30773 is potentially severe for organizations using the TranslatePress plugin on their WordPress sites. Successful exploitation could allow attackers to execute arbitrary code remotely, leading to full site compromise. This could result in data breaches, defacement, unauthorized access to sensitive information, and disruption of website availability. For e-commerce, government, or enterprise websites, such compromise could lead to significant financial losses, reputational damage, and regulatory penalties. The vulnerability affects the integrity and confidentiality of data processed by the plugin and can also impact availability if attackers disrupt site operations. Since TranslatePress is used globally, the scope of affected systems is broad. The ease of exploitation is moderate to high because it involves deserialization of untrusted data, which is a well-understood attack vector. No authentication is required, which increases risk. The absence of known exploits currently provides a small window for mitigation before widespread attacks might occur.

1. Immediately monitor official Cozmoslabs channels and Patchstack for security patches addressing CVE-2025-30773 and apply them as soon as they become available. 2. Until a patch is released, restrict or sanitize all inputs that could be deserialized by the TranslatePress plugin, especially those coming from untrusted sources such as user inputs or external requests. 3. Employ Web Application Firewalls (WAFs) with rules designed to detect and block malicious serialized payloads targeting WordPress plugins. 4. Limit plugin usage to trusted administrators and reduce exposure by disabling or removing TranslatePress if multilingual functionality is not critical. 5. Conduct regular security audits and vulnerability scans focusing on plugin vulnerabilities and deserialization issues. 6. Implement strict access controls and monitoring on WordPress admin interfaces to detect suspicious activities. 7. Educate site administrators about the risks of unsafe deserialization and encourage prompt updates of all plugins. 8. Consider isolating critical WordPress instances or using containerization to limit the blast radius of potential exploitation.