CVE-2021-4455

CRITICAL EPSS 46.0%

Published Apr 19, 20251y ago · Modified Jun 17, 20261w ago

9.8 CVSS 3.1

Critical

Published Apr 19, 2025 1y ago

Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score

9.8

Exploitability

3.9

Impact

5.9

Vector string

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

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality High

Integrity High

Availability High

Threat Intelligence

EPSS Exploit Probability

46.0% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-434 Unrestricted Upload of File with Dangerous Type Resource Mgmt

References 2

exploit-db.com https://www.exploit-db.com/exploits/50533
wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/1de9183c-95b9-4500-85e2-08dcee956360?source=cve

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.