CVE-2025-54686: 
WordPress vulnerability analysis and mitigation

CVE-2025-54686 is a Deserialization of Untrusted Data vulnerability discovered in scriptsbundle's Exertio WordPress theme that allows Object Injection. The vulnerability affects versions up to 1.3.2 of the Exertio theme. This critical vulnerability was disclosed on July 31, 2025, and received a CVSS v3.1 base score of 9.8 (AttackerKB, Patchstack).

The vulnerability is classified as a PHP Object Injection issue (CWE-502). It has been assigned a Critical severity with a CVSS v3.1 base score of 9.8, featuring the following vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. The scoring 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 (AttackerKB).

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 critical severity with potential for complete system compromise (Patchstack).

Users are strongly advised to update to Exertio version 1.3.3 or later, which contains the fix for this vulnerability. For temporary mitigation, Patchstack has issued a virtual patch to block potential attacks until the update can be applied (Patchstack).