CVE-2025-49380 is a deserialization of untrusted data vulnerability found in the wpinstinct WooCommerce Vehicle Parts Finder plugin, versions up to and including 3.7. This vulnerability allows an attacker to inject malicious objects during the deserialization process, which can lead to unauthorized access to sensitive data. The flaw arises because the plugin improperly handles serialized data inputs, failing to validate or sanitize them before deserialization. Exploitation requires no authentication or user interaction and can be performed remotely over the network. The CVSS v3.1 base score is 5.3, indicating a medium severity level, with the vector AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N, meaning the attack affects confidentiality only, with no impact on integrity or availability. Although no known exploits are currently in the wild, the vulnerability poses a risk of data exposure, particularly sensitive customer or vehicle-related information stored or processed by the plugin. The vulnerability affects e-commerce sites using WooCommerce with this plugin, commonly used in automotive parts retail scenarios. The lack of available patches at the time of publication necessitates cautious handling and monitoring for updates from the vendor. The vulnerability is significant because deserialization flaws can sometimes be leveraged for more severe attacks, but in this case, the impact is limited to confidentiality loss.

For European organizations, especially those operating e-commerce platforms in the automotive parts sector, this vulnerability could lead to unauthorized disclosure of sensitive customer data or vehicle information. While the impact is limited to confidentiality and does not affect data integrity or system availability, the exposure of personal or business-critical information can result in reputational damage, regulatory penalties under GDPR, and loss of customer trust. Given the widespread use of WooCommerce in Europe and the automotive industry's prominence in countries like Germany, France, Italy, Spain, and the UK, the threat is particularly relevant. Attackers exploiting this vulnerability could harvest data remotely without needing credentials or user interaction, increasing the risk of automated or large-scale attacks. Although no active exploits are reported, the medium severity rating and ease of exploitation warrant proactive mitigation to avoid potential data breaches and compliance issues.

1. Monitor the wpinstinct vendor channels and Patchstack advisories closely for the release of an official patch addressing CVE-2025-49380 and apply it promptly. 2. If an immediate patch is unavailable, consider disabling or uninstalling the WooCommerce Vehicle Parts Finder plugin to eliminate the attack surface. 3. Implement web application firewalls (WAFs) with custom rules to detect and block suspicious serialized data payloads targeting the vulnerable plugin endpoints. 4. Conduct regular security audits and code reviews of custom WooCommerce plugins to identify unsafe deserialization practices. 5. Limit exposure by restricting access to plugin-related endpoints via network segmentation or IP whitelisting where feasible. 6. Ensure that backups and incident response plans are up to date to quickly recover from any potential data exposure incidents. 7. Educate development teams on secure coding practices related to serialization and deserialization to prevent similar vulnerabilities in future plugins or customizations.