CVE-2021-36827 : Vulnerability Insights and Analysis
Discover the details of CVE-2021-36827, an Authenticated Stored Cross-Site Scripting (XSS) vulnerability in Ninja Forms Contact Form plugin <= 3.6.9 at WordPress. Learn about its impact, technical aspects, and mitigation strategies.
A Stored Cross-Site Scripting (XSS) vulnerability was discovered in the Ninja Forms Contact Form plugin version <= 3.6.9 at WordPress. This CVE was assigned a CVSS base score of 4.8, indicating a medium severity vulnerability.
Understanding CVE-2021-36827
This section provides insights into the vulnerability details, its impact, technical aspects, and mitigation strategies.
What is CVE-2021-36827?
The vulnerability identified as CVE-2021-36827 is an Authenticated Stored Cross-Site Scripting (XSS) security flaw in the Ninja Forms Contact Form plugin version <= 3.6.9 in WordPress. The flaw allows an authenticated attacker with admin privileges to inject malicious scripts via the "label" field.
The Impact of CVE-2021-36827
The impact of this vulnerability is classified as CAPEC-592 Stored XSS. It can lead to unauthorized access, data manipulation, or complete system compromise by executing arbitrary code in the context of the user's browser.
Technical Details of CVE-2021-36827
Let's delve into the technical specifics of this vulnerability to better understand its implications.
Vulnerability Description
The vulnerability resides in the inadequate handling of user input in the "label" field, allowing attackers to store and execute malicious scripts within the application.
Affected Systems and Versions
The affected system includes the Ninja Forms Contact Form plugin version <= 3.6.9 running on WordPress instances. Users with versions prior to 3.6.10 are at risk.
Exploitation Mechanism
The exploitation of this vulnerability requires authentication as an admin user. By manipulating the "label" field, attackers can inject and execute arbitrary JavaScript code.
Mitigation and Prevention
To safeguard systems from CVE-2021-36827, immediate actions and long-term security practices are essential.
Immediate Steps to Take
Users are advised to update the Ninja Forms Contact Form plugin to version 3.6.10 or higher to mitigate the risk of exploitation.
Long-Term Security Practices
Implement secure coding practices, input validation, and security mechanisms to prevent XSS vulnerabilities in web applications.
Patching and Updates
Regularly monitor security advisories and apply patches promptly to stay protected from known vulnerabilities.