CVE-2021-38339

Public Exploit
Simple Matted Thumbnails <= 1.01 Reflected Cross-Site Scripting

Description

The Simple Matted Thumbnails WordPress plugin is vulnerable to Reflected Cross-Site Scripting due to a reflected $_SERVER["PHP_SELF"] value in the ~/simple-matted-thumbnail.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 1.01.

Remediation

Solution:

  • Uninstall plugin from WordPress site.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.21%
Third-Party Advisory wordpress.org Third-Party Advisory wordfence.com
Affected: Simple Matted Thumbnails Simple Matted Thumbnails
Published at:
Updated at:

References

Link Tags
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-38339 third party advisory
https://plugins.trac.wordpress.org/browser/simple-matted-thumbnails/tags/1.01/simple-matted-thumbnail.php#L122 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-38339?
CVE-2021-38339 has been scored as a medium severity vulnerability.
How to fix CVE-2021-38339?
To fix CVE-2021-38339: Uninstall plugin from WordPress site.
Is CVE-2021-38339 being actively exploited in the wild?
It is possible that CVE-2021-38339 is being exploited or will be exploited in a near future based on public information. 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-2021-38339?
CVE-2021-38339 affects Simple Matted Thumbnails Simple Matted Thumbnails.
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