CVE-2026-27414 HIGH

CVE-2026-27414: WordPress Werkstatt theme <= 4.8.3 - PHP Object Injection vulnerability

Vendor Fuelthemes
Product Werkstatt
Weakness CWE-502 · Unsafe deserialization
Published July 2, 2026
Last update July 2, 2026
View on NVD All CVEs

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Contributor PHP Object Injection in Werkstatt <= 4.8.3 versions.

Explanation of Vulnerability in Simple Terms

02Summary

Werkstatt versions up to 4.8.3 contain a deserialization vulnerability that allows authenticated users to execute arbitrary code on the site. An attacker with low-level access can craft malicious serialized data that, when processed by the application, runs their own code with full site privileges. This affects confidentiality, integrity, and availability of the entire installation.

What an attacker can do

03Attacker Capabilities

Run arbitrary code on the site with full administrative privileges.

Potential impact on your site

04Site Impact

Complete compromise of the site: data theft, malware injection, user account takeover, and site defacement.

Conditions required to exploit

05Prerequisites

Attacker must have a low-level user account (e.g., subscriber or contributor role).

Key dates

06Disclosure timeline

July 2, 2026 CVE published
July 2, 2026 Record updated

Related vulnerabilities

08Related CVE

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