CVE-2025-39480: 
WordPress vulnerability analysis and mitigation

A Deserialization of Untrusted Data vulnerability (CVE-2025-39480) was discovered in ThemeMakers Car Dealer WordPress theme affecting versions through 1.6.6. The vulnerability was disclosed on May 22, 2025, and allows for PHP Object Injection. This unauthenticated vulnerability received a Critical CVSS v3.1 base score of 9.8 (Patchstack).

The vulnerability is classified as CWE-502 (Deserialization of Untrusted Data) with a CVSS v3.1 vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. This indicates that the vulnerability can be exploited over the network, requires low attack complexity, needs no privileges or user interaction, and can result in high impacts to confidentiality, integrity, and availability (NVD).

The PHP Object Injection vulnerability could potentially allow malicious actors to execute code injection, SQL injection, path traversal, and denial of service attacks if a proper POP chain is present. The high CVSS score of 9.8 indicates that this vulnerability is highly dangerous and expected to become mass exploited (Patchstack).

Currently, no official fix is available for this vulnerability. Patchstack has issued a virtual patch to mitigate the issue by blocking potential attacks until an official fix becomes available. Website owners are advised to implement mitigation measures immediately (Patchstack).