CVE-2025-49380 is a deserialization of untrusted data vulnerability found in the wpinstinct WooCommerce Vehicle Parts Finder plugin, versions up to 3.7. This vulnerability allows an attacker to perform object injection by sending specially crafted serialized data to the plugin, which improperly deserializes it without sufficient validation. Object injection can lead to various attack scenarios, including application logic manipulation, data tampering, or even remote code execution in some contexts, although no direct integrity or availability impact is reported here. The vulnerability is remotely exploitable over the network without requiring authentication or user interaction, increasing its risk profile. The CVSS 3.1 base score is 5.3, reflecting a medium severity primarily due to the limited confidentiality impact and no direct integrity or availability compromise. No known exploits have been observed in the wild, and no official patches have been released at the time of publication. The vulnerability affects WooCommerce stores using the Vehicle Parts Finder plugin, which is popular among automotive parts e-commerce sites. The lack of patches necessitates immediate mitigation steps to prevent exploitation. The vulnerability was reserved in June 2025 and published in October 2025, indicating recent discovery and disclosure.

For European organizations, particularly those operating e-commerce platforms in the automotive parts sector, this vulnerability poses a moderate risk. Exploitation could allow attackers to inject malicious objects into the application, potentially leading to unauthorized data access or manipulation of application behavior. Although the direct impact on confidentiality is limited and there is no reported integrity or availability impact, the ability to inject objects could be leveraged as a foothold for further attacks or lateral movement within the network. This risk is heightened for organizations that rely heavily on WooCommerce with the vulnerable plugin installed, as attackers can exploit the vulnerability remotely without authentication. The absence of known exploits reduces immediate risk but does not eliminate the threat, especially given the plugin’s usage in key European markets. Disruption or compromise of automotive parts e-commerce platforms could affect business continuity and customer trust. Additionally, regulatory compliance under GDPR requires organizations to protect customer data, and exploitation could lead to data breaches with legal consequences.

1. Immediately identify and inventory all WooCommerce installations using the Vehicle Parts Finder plugin, specifically versions up to 3.7. 2. Disable or uninstall the vulnerable plugin until an official patch or update is released by wpinstinct. 3. Implement strict input validation and sanitization on all data inputs related to the plugin to prevent malicious serialized data from being processed. 4. Monitor web server and application logs for unusual or suspicious serialized data payloads or unexpected plugin behavior. 5. Employ Web Application Firewalls (WAFs) with custom rules to detect and block attempts to exploit deserialization vulnerabilities. 6. Keep WooCommerce and all plugins updated regularly and subscribe to vendor security advisories for timely patching. 7. Conduct security awareness training for developers and administrators on the risks of deserialization vulnerabilities and secure coding practices. 8. Consider isolating or sandboxing the plugin’s execution environment to limit potential damage from exploitation. 9. Prepare incident response plans specifically addressing web application vulnerabilities and potential exploitation scenarios. 10. Engage with the plugin vendor or community to encourage prompt patch development and disclosure transparency.