CVE-2026-66563: WordPress Windsor theme <= 2.10 - PHP Object Injection vulnerability

Q: Who can exploit this issue?

The vulnerability is unauthenticated, so an attacker does not need a WordPress account or other prior privileges to attempt exploitation.

Q: What impact could successful exploitation have?

The reported severity vector indicates network-reachable exploitation with low complexity and no user interaction, with high potential impact on confidentiality, integrity, and availability.

Q: Which versions are affected?

Windsor theme versions 2.10 and earlier are identified as affected.

Published Oct 10, 2026

Updated

Unauthenticated PHP Object Injection in Windsor <= 2.10 versions.

Affected Software

1 affected component

WordPress Windsor theme<=2.10

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

Who can exploit this issue?

The vulnerability is unauthenticated, so an attacker does not need a WordPress account or other prior privileges to attempt exploitation.

What impact could successful exploitation have?

The reported severity vector indicates network-reachable exploitation with low complexity and no user interaction, with high potential impact on confidentiality, integrity, and availability.

Which versions are affected?

Windsor theme versions 2.10 and earlier are identified as affected.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

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