WordPress Windsor theme <= 2.10 - PHP Object Injection vulnerability

published 2026-10-10 29 d ago modified 2026-10-13 26 d ago also EUVD-2026-96517

cvss: 9.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits: 0; none known

Unauthenticated PHP Object Injection in Windsor <= 2.10 versions.

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: total
Assessed: 28 d ago (2026-10-11)

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

ThemeREX Windsor

Classification

Weakness

CWE-502 Deserialization of Untrusted Data

Technology feeds

WordPress rss critical rss

References

patchstack.com /database/wordpress/theme/windsor/vulnerability/wordpress-windsor-theme-2-10-php-object-injection-vulnerabilit
vdb-entry

Sources

CVE List CVE-2026-66563
NVD CVE-2026-66563

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary