CVE-2023-28170 CRITICAL

CVE-2023-28170: WordPress Theme Demo Import Plugin <= 1.1.1 is vulnerable to Arbitrary File Upload

Vendor Themely

Product Theme Demo Import

Weakness CWE-434 · Unrestricted file upload

Published December 20, 2023

Last update April 28, 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

Unrestricted Upload of File with Dangerous Type vulnerability in Themely Theme Demo Import.This issue affects Theme Demo Import: from n/a through 1.1.1.

Explanation of Vulnerability in Simple Terms

02Summary

Theme Demo Import allows authenticated administrators to upload files without proper validation. An attacker with admin privileges can upload malicious files that affect the entire site, including reading sensitive data, modifying content, or disrupting service. The vulnerability requires high-level access but has broad impact across the WordPress installation.

What an attacker can do

03Attacker Capabilities

Upload malicious files to read data, modify content, or disable the site.

Potential impact on your site

04Site Impact

A compromised admin account can be used to upload files that compromise your entire site.

Conditions required to exploit

05Prerequisites

Attacker must have administrator-level access to 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-2023-28170 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/434.html AskarLabs — CWE-434 write-up Unrestricted Upload of File with Dangerous Type

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