PHP Object Injection Vulnerability in Advice Theme by Patchstack
CVE-2026-65577

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Advice
Vendor
CVE Published:
6 August 2026

What is CVE-2026-65577?

An unauthenticated PHP Object Injection vulnerability has been identified in the Advice theme versions up to 1.18.0. This vulnerability allows malicious actors to exploit the application without authentication, potentially enabling them to execute arbitrary PHP code on the server. The flaw arises from improper handling of user input, leading to significant security risks for WordPress sites utilizing this theme. Users are strongly advised to update to the latest version to safeguard their sites from potential exploits.

Affected Version(s)

Advice <= 1.18.0

References

https://patchstack.com/database/wordpress/theme/advice/vu...
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
.