PHP Object Injection Vulnerability in Anti-Malware Security and Brute-Force Firewall by Patchstack
CVE-2026-39478

8.8HIGH

Key Information:

Vendor

WordPress
Status
Anti-malware Security And Brute-force Firewall
Vendor
CVE Published:
15 June 2026

What is CVE-2026-39478?

A PHP Object Injection vulnerability exists in Anti-Malware Security and Brute-Force Firewall versions 4.23.87 and earlier, which may allow attackers to exploit the application's handling of serialized objects. This could lead to manipulation of application logic, unauthorized access to sensitive data, or execution of arbitrary code, posing significant security risks to users of the plugin.

Affected Version(s)

Anti-Malware Security and Brute-Force Firewall <= 4.23.87

References

https://patchstack.com/database/wordpress/plugin/gotmls/v...
vdb-entry

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

daroo | Patchstack Bug Bounty Program
.