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High severity · published Oct 24, 2026
CVE-2026-114704
WordPress Relevanssi plugin <= 4.28.4 - PHP Object Injection vulnerability
New
7.2
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RE
Relevanssi · Christoph Vielgrader
through 4.28.4 · source: vendor
Affected product
RE
Relevanssi
Christoph Vielgrader
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-114704
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-114704
patchstack.com
https://patchstack.com/database/wordpress/plugin/relevanssi/vulnerability/wordpress-relevanssi-plugin-4-28-4-php-object-injection-vulnerability?_s_id=cve