CVE-2026-114704
Received Received - Intake

Deserialization of Untrusted Data in Relevanssi Plugin

Publication date: 2026-10-24

Last updated on: 2026-10-24

Assigner: Patchstack

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

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Meta Information

Published
2026-10-24
Last Modified
2026-10-24
Generated
2026-10-24
AI Q&A
2026-10-24
EPSS Evaluated
N/A
NVD
CVE-2026-114704
EUVD
EUVD-2026-109297

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Christoph Vielgrader Relevanssi 0

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-502 The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

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Executive Summary

This is a Deserialization of Untrusted Data vulnerability in the Relevanssi WordPress plugin versions 4.28.4 and below. It allows PHP Object Injection, which could let attackers manipulate site data processing and execute harmful actions on the server.

Detection Guidance

Detecting this vulnerability requires checking the installed version of the Relevanssi plugin. Use commands like 'wp plugin list' in WordPress or inspect the plugin directory for version details. If the version is 4.28.4 or below, the system is vulnerable.

Impact Analysis

Attackers could exploit this to execute malicious actions on your server, potentially compromising your website or data. It may also be used in mass campaigns targeting thousands of websites.

Mitigation Strategies

Immediately update the Relevanssi plugin to version 4.28.5 or later. If updating is not possible, apply the Patchstack mitigation rule to block attacks until the update is applied.

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