Is CVE-2021-24493 actively exploited?

No active exploitation of CVE-2021-24493 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-24493 be exploited remotely?

Yes. CVE-2021-24493 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-24493?

CVE-2021-24493 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2021-24493

CRITICAL

CVE-2021-24493

CWE-434Published: September 13, 2021· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

The shopp_upload_file AJAX action of the Shopp WordPress plugin through 1.4, available to both unauthenticated and authenticated user does not have any security measure in place to prevent upload of malicious files, such as PHP, allowing unauthenticated users to upload arbitrary files and leading to RCE

NVD Source

Technical Analysis

CVE-2021-24493 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.