CVE-2025-49869: 
WordPress vulnerability analysis and mitigation

A PHP Object Injection vulnerability (CVE-2025-49869) was discovered in Arraytics Eventin WordPress plugin affecting versions up to 4.0.31. The vulnerability was reported on May 5, 2025, by security researcher Nguyen Ngoc Quang Bach (maysbachs) and was publicly disclosed on August 13, 2025 (Patchstack).

The vulnerability is classified as a Deserialization of Untrusted Data (CWE-502) issue that allows Object Injection in the Eventin plugin. It received a CVSS v3.1 Base Score of 8.8 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. The vulnerability requires Contributor or higher privileges to exploit (Patchstack).

If exploited, this PHP Object Injection vulnerability could potentially allow malicious actors to execute code injection, SQL injection, path traversal, or denial of service attacks if a proper POP chain is present. The high CVSS score of 8.8 indicates significant potential impact on the affected systems (Patchstack).

The vulnerability has been patched in version 4.0.32 of the Eventin plugin. Users are advised to update to version 4.0.32 or later immediately. Additionally, Patchstack has issued a virtual patch to mitigate this issue by blocking potential attacks until users can update to the fixed version (Patchstack).