CVE-2025-31612 CRITICAL

CVE-2025-31612: WordPress CBX Poll plugin <= 2.0.4 - PHP Object Injection vulnerability

Vendor Sabuj Kundu
Product CBX Poll
Weakness CWE-502 · Unsafe deserialization
Published April 1, 2025
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

Deserialization of Untrusted Data vulnerability in Sabuj Kundu CBX Poll cbxpoll allows Object Injection.This issue affects CBX Poll: from n/a through <= 2.0.4.

Explanation of Vulnerability in Simple Terms

02Summary

CBX Poll versions 2.0.4 and earlier contain a deserialization vulnerability that allows unauthenticated attackers to execute arbitrary code on the site. The vulnerability exists because the plugin deserializes untrusted data without proper validation. An attacker can exploit this remotely over the network without requiring authentication or user interaction.

What an attacker can do

03Attacker Capabilities

Run their own code on the site with full privileges (remote code execution).

Potential impact on your site

04Site Impact

Complete site compromise: attackers can steal data, modify content, create admin accounts, or take the site offline.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

April 1, 2025 CVE published
April 28, 2026 Record updated