CVE-2021-24490

Name: CVE-2021-24490
Creator: NVD / NIST
Published: 2021-09-13T18:15:14.353+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.8/10EPSS 0.54%

Last modified Jun 17, 2026

CVE-2021-24490 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. The Email Artillery (MASS EMAIL) WordPress plugin through 4.1 does not properly check the uploaded files from the Import Emails feature, allowing arbitrary files to be uploaded. Furthermore, the plugin is also lacking any CSRF check, allowing such issue to be exploited via a CSRF attack as well. EPSS estimates a 0.54% chance of exploitation in the next 30 days.

Description

The Email Artillery (MASS EMAIL) WordPress plugin through 4.1 does not properly check the uploaded files from the Import Emails feature, allowing arbitrary files to be uploaded. Furthermore, the plugin is also lacking any CSRF check, allowing such issue to be exploited via a CSRF attack as well. However, due to the presence of a .htaccess, denying access to everything in the folder the file is uploaded to, the malicious uploaded file will only be accessible on Web Servers such as Nginx/IIS

Metrics

CVSS 3.1

6.8/10

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

EPSS Probability

0.54%

41.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Email Artillery Project	Email Artillery	<= 4.1

References

https://wpscan.com/vulnerability/4ea0127e-afef-41bf-a005-c57432f9f58cExploit, Third Party Advisory
https://wpscan.com/vulnerability/4ea0127e-afef-41bf-a005-c57432f9f58cExploit, Third Party Advisory

Timeline

Published: Sep 13, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24490?

How severe is CVE-2021-24490?

CVE-2021-24490 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 0.54% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24490?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-24490?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST