Unauthenticated PHP Object Injection in Ultimate Maps by Supsystic
CVE-2026-73376

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Ultimate Maps By Supsystic
Vendor
CVE Published:
18 August 2026

What is CVE-2026-73376?

This vulnerability allows unauthenticated users to exploit PHP Object Injection in Ultimate Maps by Supsystic versions prior to 1.5.0. By sending specially crafted requests, attackers can manipulate the PHP object structure, potentially leading to unauthorized access or execution of arbitrary code on vulnerable installations.

Affected Version(s)

Ultimate Maps by Supsystic < 1.5.0

References

https://patchstack.com/database/wordpress/plugin/ultimate...
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

Asim Alshaya | Patchstack Bug Bounty Program
.