TI-2026-80070 Aliases CVE-2026-114704 GHSA-q53w-3673-wrjv

PHP object injection in WordPress Relevanssi plugin

LOW 34CWE-502Published 2026-10-24 · Updated 2026-10-24

Key facts

Attack vector: Network
Privileges required: High
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

The Relevanssi plugin for WordPress by Christoph Vielgrader is affected through version 4.28.4. Deserialization of untrusted data (CWE-502) lets the plugin process attacker-supplied serialized data, which allows PHP object injection. An attacker over the network who holds high privileges can affect confidentiality, integrity and availability.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00413 35th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Christoph Vielgrader	Relevanssi	up to 4.28.4	—	No fix listed	CNA

Relevanssi VendorChristoph Vielgrader Affected up to 4.28.4 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Relevanssi.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

2026-10-24 Threatist record created from CVE-2026-114704
2026-10-24 Alias added: GHSA-q53w-3673-wrjv

References

Other 1

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

TI-2026-42496 WordPress Relevanssi Light plugin <= 1.2.2 - SQL Injection vulnerability CVSS 3.1CRITICAL 9.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences