Unauthenticated PHP Object Injection in Qwery Theme
CVE-2026-78533

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Qwery
Vendor
CVE Published:
10 October 2026

What is CVE-2026-78533?

The Qwery Theme for WordPress allows unauthenticated users to exploit a vulnerability through PHP object injection. This occurs in versions up to 3.6.1, where improper sanitization can result in arbitrary code execution and manipulation of objects. Such vulnerabilities pose significant risks, potentially allowing attackers to compromise the application and gain unauthorized access to sensitive information.

Affected Version(s)

Qwery <= 3.6.1

References

https://patchstack.com/database/wordpress/theme/qwery/vul...
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

João Pedro S Alcântara (Kinorth) | Patchstack Bug Bounty Program
.