Security readout for executives and security teams
Plain-English summary
A stored cross-site scripting flaw is reported in nopCommerce 4.40.3 product names. If unsafe content is saved in a product name, it can execute when shoppers view that product. That can expose customer sessions or enable page tampering, but the bundle does not show confirmed exploitation or a named fixed version.
Executive priority
Treat as a moderate web application risk. Prioritize shops that are public, customer-facing, or handle authenticated customer sessions. The immediate business concern is customer trust and session exposure, not system takeover based on the provided evidence.
Technical view
CVE-2021-42193 is CWE-79 stored XSS at /Admin/Product/Edit/[id]. The CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N, score 6.1. The source says the payload fires whenever a shop user views the affected product. Affected metadata is incomplete beyond nopCommerce 4.40.3.
Likely exposure
Exposure is most likely on internet-facing nopCommerce 4.40.3 shops where product names can contain unsanitized HTML or script content. The affected CPE data is absent, so asset teams should verify by product version and route behavior, not package identifiers alone.
Exploitation context
The bundle does not indicate CISA KEV listing or confirmed active exploitation. The vulnerability requires a user to view a maliciously named product. The description does not clarify who can create or edit the product name, so privilege assumptions should be validated locally.
Researcher notes
The record has limited affected-product metadata and only one external reference in the bundle. Validate authorization boundaries, stored rendering context, output encoding, and whether later nopCommerce versions changed product-name handling. Do not claim exploitation or a fixed version without additional vendor evidence.
Mitigation direction
- Check nopCommerce vendor guidance for affected and fixed versions.
- Upgrade only to a vendor-confirmed fixed release when identified.
- Restrict administrative product-edit access to trusted users.
- Review and clean product names containing unsafe markup.
- Consider CSP and output-encoding controls as defense in depth.
Validation and detection
- Inventory nopCommerce instances and confirm any running 4.40.3.
- Check whether /Admin/Product/Edit/[id] exists on those instances.
- Review product names for script-like or unexpected markup.
- Safely verify product-name rendering in a controlled test environment.
- Confirm no customer-facing product page executes stored markup.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-42193 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N2.82.7CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://cxsecurity.com/issue/WLB-2025100002CVE reference, mitre
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.