VU#633103: Insufficient Session Cookie Invalidation in nopCommerce ASP.NET Core eCommerce Platform

Overview

nopCommerce, an ecommerce platform, fails to invalidate session cookies upon user logout or session termination, enabling attackers to use the captured cookie to gain access to the application. This vulnerability is extremely similar to CVE-2019-7215. The session cookie can be obtained through XSS, network interception, or a local compromise, and can then be re-used even after the user has logged out. Session hijack attacks have been widely observed for many years, and have been used in ransomware and cryptocurrency theft attacks. Malicious attackers are also known to sell this type of session data online after device compromise.

Description

nopCommerce is an open-source ecommerce platform. The platform is based on ASP.NET core and uses MS SQL 2012 as the backend. The platform is used by a variety of companies, including Microsoft, Volvo, and BMW. nopCommerce is intended for usage within various website stores, and works across shipping APIs, Content Delivery Networks (CDNs) and also offers a login feature for users to save their cart.

A vulnerability has been discovered within the login feature, as it does not invalidate session cookies following user logout or session termination. This vulnerability is tracked as CVE-2025-11699. The vulnerability description is as follows:

nopCommerce v4.70 and prior, and version 4.80.3, does not invalidate session cookies after logout or session termination, allowing an attacker who has a a valid session cookie access to privileged endpoints (such as /admin) even after the legitimate user has logged out, enabling session hijacking. Any version above 4.70 that is not 4.80.3 fixes the vulnerability.

Attackers have been known to exploit these types of vulnerabilities for numerous reasons. Session cookies and session ID information has been sold on underground forums post device compromise for other attackers to leverage in attacks, and have also been used in ransomware and cryptocurrency theft attacks.

Impact

The theft and re-use of a session cookie by an attacker could result in financial or ransomware attacks by an attacker.

Solution

Version 4.70 and after, with the exception of 4.80.3, fixes the vulnerability put forth by CVE-2025-11699. Users on version 4.80.3, or any version of nopCommerce prior to version 4.70, should update to the latest version, 4.90.3, as soon as possible.

Acknowledgements

Thanks to the reporter, Beatriz Fresno Naumova (beafn28).This document was written by Christopher Cullen.