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Vulnerabilities

Vulnerability · CVE-2021-4455

The Wordpress Plugin Smart Product Review plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in all versions up to, and including, 1.0

Published Apr 19, 2025 · catalog updated Apr 8, 2026 · Codeflist Wordpress Plugin Smart Product Review

Check this week

CVE-2021-4455 is not in CISA KEV. FIRST estimates a 79.00% chance of exploitation in the next 30 days. Check whether you run Codeflist Wordpress Plugin Smart Product Review.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
79.00%
Remediation
Vendor / distro source
Affected products
vendor Codeflist Wordpress Plugin Smart Product Review 0 ≤1.0.4

The Wordpress Plugin Smart Product Review plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in all versions up to, and including, 1.0.4. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Codeflist Wordpress Plugin Smart Product Review 0 ≤1.0.40 ≤1.0.4

How to fix CVE-2021-4455

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2021-4455 is not in CISA KEV. FIRST estimates a 79.00% chance of exploitation in the next 30 days. Check whether you run Codeflist Wordpress Plugin Smart Product Review.

Which versions are affected?

Compare what you have installed with Codeflist Wordpress Plugin Smart Product Review 0 ≤1.0.4 0 ≤1.0.4. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 79.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 19, 2025 · EUVD

    Detected

    The Wordpress Plugin Smart Product Review plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in all versions up to, and including, 1.0.4. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

  2. Apr 8, 2026 · EUVD

    Updated

    The Wordpress Plugin Smart Product Review plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in all versions up to, and including, 1.0.4. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

Sources

  • CVE.orgVulnerability recordCVE-2021-4455

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2021-34680

    The Wordpress Plugin Smart Product Review plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in all versions up to, and including, 1.0.4. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected s

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.