PHP Object Injection Vulnerability in ShiftUp Theme by PatchStack
CVE-2026-40733

8.1HIGH

Key Information:

Vendor

WordPress
Status
Shiftup
Vendor
CVE Published:
17 June 2026

What is CVE-2026-40733?

The ShiftUp theme versions up to 1.3 are vulnerable to an unauthenticated PHP object injection, allowing attackers to exploit the vulnerability without any user authentication. This can lead to potential unauthorized access or manipulation of sensitive data within the WordPress environment, compromising the security and integrity of the affected applications.

Affected Version(s)

ShiftUp <= 1.3

References

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

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Denver Jackson | Patchstack Bug Bounty Program
.