PHP Object Injection Vulnerability in Original Theme by WordPress
CVE-2026-66568

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Original
Vendor
CVE Published:
10 October 2026

What is CVE-2026-66568?

The Original Theme for WordPress has a vulnerability that allows unauthenticated attackers to exploit PHP Object Injection. This issue affects versions up to and including 1.9.0, enabling potential unauthorized access and manipulation of object properties. Users of the theme are advised to review their installations and apply necessary updates to mitigate risks associated with this vulnerability.

Affected Version(s)

Original <= 1.9.0

References

https://patchstack.com/database/wordpress/theme/original/...
vdb-entry

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Bonds | Patchstack Bug Bounty Program
.