CVE-2026-66565: WordPress FC United theme <= 1.1.1 - PHP Object Injection vulnerability
Published Oct 10, 2026
·Updated
Unauthenticated PHP Object Injection in FC United <= 1.1.1 versions.
Affected Software
1 affected component
WordPress FC United<=1.1.1
Event History
Oct 10, 2026
CVE Published
via MITRE·07:36 PM
Data Sourced
via MITRE·07:36 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·08:16 PM
DescriptionSeverityWeakness
Frequently Asked Questions
1
Who can exploit this issue?
The issue is unauthenticated, so an attacker does not need a WordPress account or prior access to target an affected site.
2
Which installations are affected?
WordPress sites using the FC United theme version 1.1.1 or earlier are affected according to the available information.
3
What is the potential impact?
The vulnerability is rated critical with network access, low attack complexity, no required privileges or user interaction, and high impacts to confidentiality, integrity, and availability.