CVE-2026-27436 CRITICAL

CVE-2026-27436: WordPress Five Star Business Profile and Schema plugin <= 2.3.19 - Arbitrary Code Execution vulnerability

Vendor Rustaurius

Product Five Star Business Profile and Schema

Weakness CWE-94 · Code injection

Published July 2, 2026

Last update July 2, 2026

View on NVD All CVEs

CVSS base score

9.1/10

Attack vector Network

Attack complexity Low

Privileges required High

User interaction None

Confidentiality High

Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

Editor Arbitrary Code Execution in Five Star Business Profile and Schema <= 2.3.19 versions.

Explanation of Vulnerability in Simple Terms

02Summary

Five Star Business Profile and Schema versions up to 2.3.19 contain a code injection vulnerability that allows high-privileged users to execute arbitrary PHP code on the site. An attacker with administrative or equivalent access can inject malicious code through unvalidated input, compromising the entire site. The vulnerability affects confidentiality, integrity, and availability of the affected system.

What an attacker can do

03Attacker Capabilities

Run arbitrary PHP code on the site with full system privileges.

Potential impact on your site

04Site Impact

A compromised admin account can execute code, steal data, modify content, or take the site offline.

Conditions required to exploit

05Prerequisites

Attacker must have high-level administrative access to the site.

Key dates

06Disclosure timeline

July 2, 2026 CVE published

July 2, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-27436 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/94.html

Related vulnerabilities

Identifiers

CVE CVE-2026-27436

CWE CWE-94

CVSS 9.1 / CRITICAL

Affected versions