CVE-2026-114704 PUBLISHED

WordPress Relevanssi plugin <= 4.28.4 - PHP Object Injection vulnerability

Assigner: Patchstack
Reserved: 22.10.2026 Published: 24.10.2026 Updated: 24.10.2026

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

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 7.2

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	High	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Christoph Vielgrader
Product	Relevanssi
Versions	Default: unaffected affected from 0 to 4.28.4 (incl.)

Solutions

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

Credits

Ananda Dhakal (Patchstack) finder

References

https://patchstack.com/database/wordpress/plugin/relevanssi/vulnerability/wordpress-relevanssi-plugin-4-28-4-php-object-injection-vulnerability?_s_id=cve

Problem Types

Deserialization of Untrusted Data CWE

Impacts

Object Injection