CVE-2021-39352Public exploitNetwork attack vector

Admin-only code execution via unrestricted PHP upload

Published Oct 21, 2021 · Updated Feb 14, 2025

Unrestricted file upload in Catch Themes Demo Import 1.7 and earlier allows remote authenticated users to execute PHP code. The ctdi_import_demo_data AJAX action accepts a content_file upload and stores its attacker-controlled filename in WordPress uploads without rejecting PHP file types. Administrator access and a valid plugin nonce are required; successful exploitation installs executable server-side code.

CVSS severity7.2
High
EPSS probability56.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Catch Themes Demo Import 1.7 and earlier allows remote authenticated users to execute PHP code. The ctdi_import_demo_data AJAX action accepts a content_file upload and stores its attacker-controlled filename in WordPress uploads without rejecting PHP file types. Administrator access and a valid plugin nonce are required; successful exploitation installs executable server-side code.

The record

CVE
CVE-2021-39352
Published
Oct 21, 2021
Updated
Feb 14, 2025
Vendor
Catch Themes
Product
Catch Themes Demo Import
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 21, 2021CVE publishedPublication date reported by the CVE source.
  2. Feb 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.7 <=1.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Catch Themes · Catch Themes Demo Importversion=1.7 <=1.7

Published CVSS scores

7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Server Software Component: Web Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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