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, 1.0.4. 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 v3.1

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

EPSS

0.74% chance of exploitation in the next 30 days, 52th percentile

Published

2025-04-19

Updated

2026-04-08

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/50533

References

• CVE Record
• NVD entry

Related

• CVE-2021-44529
• CVE-2021-44554
• CVE-2021-44528
• CVE-2021-44565
• CVE-2021-44521
• CVE-2021-44567