Critical severity · published Oct 10, 2026
CVE-2026-66568
WordPress Original theme <= 1.9.0 - PHP Object Injection vulnerability
9.8
CVSS
0.3%
EPSS
No
On KEV
Description
Unauthenticated PHP Object Injection in Original <= 1.9.0 versions.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OR
Original · axiomthemes
through 1.9.0 · source: vendor