Vulnerability · Published Oct 28, 2026 · Assigned by VulnCheck

CVE-2026-117605nopCommerce before 5.00.0 Missing Authorization via Admin ProductController Add Popup Handlers

Medium 4.3

In plain English

A medium-severity authorization bypass via user-controlled key in nopCommerce from nopSolutions. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.3%top 82.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

nopCommerce before 5.00.0 contains a missing authorization vulnerability in the admin ProductController RelatedProductAddPopup, CrossSellProductAddPopup and AssociatedProductAddPopup handlers that fail to verify parent product ownership. Authenticated vendors can submit another vendor's product id as model.ProductId to inject their products into the victim's related-products, cross-sell and grouped-product listings.

Affected products (as reported)

Vendor	Product	Versions
nopSolutions	nopCommerce	0 – before 5.00.0

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References

https://github.com/nopSolutions/nopCommerce/issues/8417 issue-tracking
https://github.com/nopSolutions/nopCommerce/commit/fbdbe18d43b42b7e269f7118cfc9533349ed2dc0 patch
https://github.com/nopSolutions/nopCommerce/blob/918444773367deb734b93d3ad80e17325d6c147a/src/Presentation/Nop.Web/Areas/Admin/Controllers/ProductController.cs#L1655-L1679 technical-description
nopCommerce release-5.00.0 Release Notes release-notes
https://github.com/nopSolutions/nopCommerce product
VulnCheck Advisory: nopCommerce before 5.00.0 Missing Authorization via Admin ProductController Add Popup Handlers third-party-advisory