CVE-2023-46147 HIGH

CVE-2023-46147: WordPress Themify Ultra Theme <= 7.3.5 is vulnerable to PHP Object Injection

Vendor Themify

Product Themify Ultra

Weakness CWE-502 · Unsafe deserialization

Published December 20, 2023

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

7.4/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction None

Confidentiality Low

Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Deserialization of Untrusted Data vulnerability in Themify Themify Ultra.This issue affects Themify Ultra: from n/a through 7.3.5.

Explanation of Vulnerability in Simple Terms

02Summary

Themify Ultra versions up to 7.3.5 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 theme, runs their own PHP code. The vulnerability affects confidentiality, integrity, and availability of the site.

What an attacker can do

03Attacker Capabilities

Run arbitrary PHP code on the site with the privileges of the web server.

Potential impact on your site

04Site Impact

A compromised user account can lead to full site takeover, data theft, or malware injection.

Conditions required to exploit

05Prerequisites

Attacker must have a low-level user account (subscriber or above) on the WordPress site.

Key dates

06Disclosure timeline

December 20, 2023 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2023-46147 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/502.html AskarLabs — CWE-502 write-up Deserialization of Untrusted Data

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