CVE-2021-34666

Public Exploit
Add Sidebar <= 2.0.0 Reflected Cross-Site Scripting

Description

The Add Sidebar WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the add parameter in the ~/wp_sidebarMenu.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 2.0.0.

Remediation

Solution:

  • Uninstall the plugin

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: Add Sidebar Add Sidebar
Published at:
Updated at:

References

Link Tags
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34666 third party advisory exploit
https://plugins.trac.wordpress.org/browser/sidebar-adder/tags/2.0.1/wp_sidebarMenu.php#L124 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-34666?
CVE-2021-34666 has been scored as a medium severity vulnerability.
How to fix CVE-2021-34666?
To fix CVE-2021-34666: Uninstall the plugin
Is CVE-2021-34666 being actively exploited in the wild?
It is possible that CVE-2021-34666 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-2021-34666?
CVE-2021-34666 affects Add Sidebar Add Sidebar.
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