CVE-2025-39485: 
WordPress vulnerability analysis and mitigation

A critical Deserialization of Untrusted Data vulnerability (CVE-2025-39485) was discovered in ThemeGoods Grand Tour | Travel Agency WordPress theme versions through 5.5.1. The vulnerability was disclosed on May 23, 2025, and allows for PHP Object Injection attacks. This unauthenticated vulnerability received a Critical CVSS v3.1 score of 9.8 (Patchstack).

The vulnerability is classified as CWE-502 (Deserialization of Untrusted Data) and allows for PHP Object Injection through unauthenticated access. The vulnerability received a CVSS v3.1 Base Score of 9.8 (Critical) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating network accessibility, low attack complexity, no privileges required, and high impact on 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. However, 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 the virtual patch immediately to protect their installations (Patchstack).