CVE-2021-39352: Catch Themes Demo Import <= 1.7 Admin+ Arbitrary File Upload

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 56.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-10-21 · updated 2026-06-17
Weakness: CWE-434

Description

The Catch Themes Demo Import WordPress plugin is vulnerable to arbitrary file uploads via the import functionality found in the ~/inc/CatchThemesDemoImport.php file, in versions up to and including 1.7, due to insufficient file type validation. This makes it possible for an attacker with administrative privileges to upload malicious files that can be used to achieve remote code execution.

Affected products

Catch Themes Demo Import: through 1.7

References

http://packetstormsecurity.com/files/165207/WordPress-Catch-Themes-Demo-Import-1.6.1-Shell-Upload.html
http://packetstormsecurity.com/files/165463/WordPress-Catch-Themes-Demo-Import-Shell-Upload.html
https://github.com/BigTiger2020/word-press/blob/main/Catch%20Themes%20Demo%20Import.md
https://github.com/Hacker5preme/Exploits/tree/main/Wordpress/CVE-2021-39352
https://plugins.trac.wordpress.org/changeset/2617555/catch-themes-demo-import/trunk/inc/CatchThemesDemoImport.php
https://www.exploit-db.com/exploits/50580
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39352
http://packetstormsecurity.com/files/165207/WordPress-Catch-Themes-Demo-Import-1.6.1-Shell-Upload.html
http://packetstormsecurity.com/files/165463/WordPress-Catch-Themes-Demo-Import-Shell-Upload.html
https://github.com/BigTiger2020/word-press/blob/main/Catch%20Themes%20Demo%20Import.md
https://github.com/Hacker5preme/Exploits/tree/main/Wordpress/CVE-2021-39352
https://plugins.trac.wordpress.org/changeset/2617555/catch-themes-demo-import/trunk/inc/CatchThemesDemoImport.php

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