Vulnerability · Published Aug 16, 2021 · Assigned by Wordfence

CVE-2021-34666Add Sidebar <= 2.0.0 Reflected Cross-Site Scripting

Medium 6.1

In plain English

A medium-severity cross-site scripting in Add Sidebar from Add Sidebar. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities).

Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.8%top 41.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
Add Sidebar Add Sidebar 2.0.0 – through 2.0.0

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References