CVE-2021-39356 MEDIUM

CVE-2021-39356: Content Staging <= 2.0.1 Authenticated Stored Cross-Site Scripting

Vendor Content Staging
Product Content Staging
Weakness CWE-79 · XSS
Published October 21, 2021
Last update February 14, 2025

CVSS base score

5.5/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

The Content Staging WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and escaping via several parameters that are echo'd out via the ~/templates/settings.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 2.0.1. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.

Key dates

02Disclosure timeline

October 21, 2021 CVE published
February 14, 2025 Record updated