---
id: CVE-2026-114704
title: WordPress Relevanssi  plugin <= 4.28.4 - PHP Object Injection vulnerability
summary: >-
  Deserialization of Untrusted Data vulnerability in Christoph Vielgrader
  Relevanssi  relevanssi allows Object Injection.This issue affects Relevanssi :
  from n/a through 4.28.4.
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-502
vendor: Christoph Vielgrader
product: relevanssi
affected:
  - relevanssi <= 4.28.4
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-24T14:40:45.580120Z'
published: '2026-10-24'
updated: '2026-10-24'
sourceUpdated: '2026-10-24T14:46:58.175Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-114704'
references:
  - url: >-
      https://patchstack.com/database/wordpress/plugin/relevanssi/vulnerability/wordpress-relevanssi-plugin-4-28-4-php-object-injection-vulnerability?_s_id=cve
tags:
  - cve.org
ingestedAt: '2026-10-24T15:00:18.037Z'
---

## Overview

Deserialization of Untrusted Data vulnerability in Christoph Vielgrader Relevanssi  relevanssi allows Object Injection.This issue affects Relevanssi : from n/a through 4.28.4.

## Affected

- `relevanssi <= 4.28.4`

## Remediation

Update the WordPress Relevanssi  plugin to the latest available version (at least 4.28.5).