---
id: CVE-2026-112862
title: >-
  WordPress Participants Database plugin <= 2.7.8.5 - PHP Object Injection
  vulnerability
summary: >-
  Deserialization of Untrusted Data vulnerability in xnau webdesign Participants
  Database participants-database allows Object Injection.This issue affects
  Participants Database: from n/a through 2.7.8.5.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-502
vendor: xnau webdesign
product: participants-database
affected:
  - participants-database <= 2.7.8.5
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-10-23T10:40:20.316200Z'
published: '2026-10-23'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T10:56:06.266Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-112862'
references:
  - url: >-
      https://patchstack.com/database/wordpress/plugin/participants-database/vulnerability/wordpress-participants-database-plugin-2-7-8-5-php-object-injection-vulnerability?_s_id=cve
tags:
  - cve.org
ingestedAt: '2026-10-23T09:20:44.066Z'
---

## Overview

Deserialization of Untrusted Data vulnerability in xnau webdesign Participants Database participants-database allows Object Injection.This issue affects Participants Database: from n/a through 2.7.8.5.

## Affected

- `participants-database <= 2.7.8.5`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.