CVE-2021-26916 Explained : Impact and Mitigation
Learn about CVE-2021-26916, a Reflected XSS vulnerability in nopCommerce 4.30 that allows remote attackers to execute malicious scripts. Find out the impact, affected systems, exploitation, and mitigation steps.
A Reflected XSS vulnerability in nopCommerce 4.30's Discount Coupon component can be exploited by remote attackers to inject malicious scripts or HTML code.
Understanding CVE-2021-26916
This CVE highlights a security flaw in nopCommerce 4.30 that allows attackers to execute Cross-Site Scripting attacks through the discountcode parameter.
What is CVE-2021-26916?
CVE-2021-26916 is a Cross-Site Scripting (XSS) vulnerability found in the Discount Coupon component of nopCommerce 4.30. It enables attackers to insert harmful web scripts or HTML code through the discountcode parameter.
The Impact of CVE-2021-26916
Exploitation of this vulnerability can lead to unauthorized execution of scripts in a user's browser, potentially compromising sensitive user data or performing actions on behalf of the user without their consent.
Technical Details of CVE-2021-26916
This section delves into the specific technical aspects of the vulnerability.
Vulnerability Description
The issue resides in the Discount Coupon component of nopCommerce 4.30, where the lack of proper input validation allows attackers to inject malicious scripts or HTML via the discountcode parameter.
Affected Systems and Versions
CVE-2021-26916 affects nopCommerce version 4.30.
Exploitation Mechanism
Remote attackers exploit this vulnerability by manipulating the discountcode parameter to inject and execute malicious scripts or HTML on the target system.
Mitigation and Prevention
Protecting systems from CVE-2021-26916 requires immediate action and ongoing security practices.
Immediate Steps to Take
- Update to the latest version of nopCommerce to patch the vulnerability.
- Implement input validation to sanitize user inputs and prevent script injections.
- Monitor web traffic for any suspicious behavior.
Long-Term Security Practices
- Conduct regular security audits and code reviews to identify and address vulnerabilities proactively.
- Educate developers on secure coding practices to mitigate XSS and other common web application security risks.
Patching and Updates
Stay informed about security updates for nopCommerce and promptly apply patches to ensure protection against known vulnerabilities.