CVE-2023-52181 CRITICAL

CVE-2023-52181: WordPress Theme per user Plugin <= 1.0.1 is vulnerable to PHP Object Injection

Vendor Presslabs

Product Theme per user

Weakness CWE-502 · Unsafe deserialization

Published December 31, 2023

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

10.0/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality High

Integrity High

CVSS vector

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

What the vulnerability does

01Description

Deserialization of Untrusted Data vulnerability in Presslabs Theme per user.This issue affects Theme per user: from n/a through 1.0.1.

Explanation of Vulnerability in Simple Terms

02Summary

Theme per user versions up to 1.0.1 contain a deserialization vulnerability that allows unauthenticated attackers to execute arbitrary code on the site. The vulnerability requires no user interaction and can be exploited over the network. An attacker can gain full control of the affected site, including reading sensitive data, modifying content, and disrupting service.

What an attacker can do

03Attacker Capabilities

Run their own code on the site and take complete control without needing to log in.

Potential impact on your site

04Site Impact

Complete site compromise: attackers can steal data, modify content, install malware, or take the site offline.

Conditions required to exploit

05Prerequisites

Network access to the site; no authentication or user interaction required.

Key dates

06Disclosure timeline

December 31, 2023 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2023-52181 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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