CVE-2021-4455: Wordpress Plugin Smart Product Review <= 1.0.4 - Unauthenticated Arbitrary File Upload

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-04-19 · updated 2026-06-17
Weakness: CWE-434

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.

Affected products

Codeflist Wordpress Plugin Smart Product Review: through 1.0.4

References

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

Get alerted when CVE-2021-4455 or the next vulnerability affects your stack