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CVE-2021-39352: The Catch Themes Demo Import WordPress plugin is vulnerable to arbitrary file uploads via the import functiona

55
This week
HIGH 7.2UPGRADE

CVE-2021-39352 is a high-severity flaw (CVSS 7.2) affecting catch themes demo import. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

  • High severity
  • EPSS top 1%: very likely to be exploited
  • Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score7.2 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededHigh
User interactionNone
EPSS exploit chance56.3% (top 1%)
CISA exploited listNo
WeaknessCWE-434
Published2021-10-21
Last modified2026-06-17
Publisher (CNA): Wordfence · Vendor: catchplugins

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

catchplugins catch themes demo import UPGRADE
Affected: <= 1.7
Fixed in: newer than 1.7
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy catch-themes-demo-import || rpm -q catch-themes-demo-import || catch-themes-demo-import --version
2. UPGRADE to newer than 1.7 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade catch-themes-demo-import
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade catch-themes-demo-import
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-39352?

catch themes demo import: upgrade to newer than 1.7. Exact commands for each OS are on this page.

Is CVE-2021-39352 being exploited?

CVE-2021-39352 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-39352 affect?

CVE-2021-39352 affects catch themes demo import. Severity is high (CVSS 7.2). 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 validat

How urgent is CVE-2021-39352?

Priority 55/100. High severity; EPSS top 1%: very likely to be exploited; Public exploit reference

Software pages

WordPress vulnerabilities · PHP vulnerabilities

Related CVEs

References

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