CVE-2021-4422

Description

The POST SMTP Mailer plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.0.20. This is due to missing or incorrect nonce validation on the handleCsvExport() function. This makes it possible for unauthenticated attackers to trigger a CSV export via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.20%
Third-Party Advisory nintechnet.com Third-Party Advisory nintechnet.com Third-Party Advisory nintechnet.com Third-Party Advisory nintechnet.com Third-Party Advisory nintechnet.com Third-Party Advisory nintechnet.com Third-Party Advisory nintechnet.com Third-Party Advisory wordfence.com
Affected: wpexpertsio POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress
Published at:
Updated at:

References

Link Tags
https://www.wordfence.com/threat-intel/vulnerabilities/id/e018ca7c-06dd-4d40-91d4-4ed188b8aaf2?source=cve third party advisory
https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/ third party advisory
https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/ third party advisory
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/ third party advisory
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/ third party advisory
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/ third party advisory
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/ third party advisory
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/ third party advisory
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2473579%40post-smtp&new=2473579%40post-smtp&sfp_email=&sfph_mail= patch

Frequently Asked Questions

What is the severity of CVE-2021-4422?
CVE-2021-4422 has been scored as a medium severity vulnerability.
How to fix CVE-2021-4422?
To fix CVE-2021-4422, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-4422 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-4422 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-4422?
CVE-2021-4422 affects wpexpertsio POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress.
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