Unauthenticated PHP Object Injection Vulnerability in Alliance Theme by PatchStack
CVE-2026-78529

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Alliance
Vendor
CVE Published:
10 October 2026

What is CVE-2026-78529?

The Alliance Theme for WordPress, versions up to 3.11, is susceptible to an unauthenticated PHP Object Injection vulnerability. This flaw allows attackers to inject malicious PHP objects, which can lead to unauthorized actions and data exposure on affected sites. It is crucial for users of the Alliance Theme to update to mitigate potential security risks.

Affected Version(s)

Alliance <= 3.11

References

https://patchstack.com/database/wordpress/theme/alliance/...
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
.