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CVE Record

CVE-2021-47856: Easy Cart Shopping Cart 2021 Cross-Site Scripting via Search Parameter

Easy Cart Shopping Cart 2021 contains a non-persistent cross-site scripting vulnerability in the search module's keyword parameter. Remote attackers can inject malicious script code through the search input to compromise user sessions and manipulate application content.

MediumCVSS 6.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

Easy Cart Shopping Cart 2021 has a reflected cross-site scripting issue in its search feature. If exposed, an attacker could cause malicious script to run in a user’s browser through the search keyword input, potentially affecting sessions or page content. This is a moderate business risk, mainly for public storefronts using the affected version.

Executive priority

Treat as a timely web-application hygiene issue, not an emergency unless the affected storefront is public and high-value. Prioritize inventory, vendor guidance, and safe validation because browser-side compromise can affect customer trust and user sessions.

Technical view

CVE-2021-47856 is CWE-79 in NetArt Media Easy Cart Shopping Cart 2021. The source bundle describes non-persistent XSS in the search module’s keyword parameter. CVSS 3.1 is 6.4: AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N. No source in the bundle identifies a vendor patch or fixed version.

Likely exposure

Exposure is likely limited to organizations running Easy Cart Shopping Cart 2021, especially internet-facing deployments with the search module enabled. The bundle lists default status as unaffected for other versions, but does not provide a full affected-version range.

Exploitation context

The CVE is not listed as CISA KEV in the provided data. Public references include a Vulnerability Lab advisory tagged as exploit, but the bundle does not establish active exploitation in the wild.

Researcher notes

Evidence is limited to the CVE description, CVSS vector, affected product entry, and linked advisories. The bundle does not name a patch, fixed version, or active exploitation. The CVSS vector includes PR:L and UI:N, which should be verified against the advisory context during assessment.

Mitigation direction

  • Identify whether Easy Cart Shopping Cart 2021 is deployed and internet-facing.
  • Check NetArt Media guidance for patches, upgrades, or configuration recommendations.
  • Apply any vendor-provided update or replacement when available.
  • Use context-aware output encoding for reflected search terms.
  • Consider web application filtering for suspicious search input as a temporary control.

Validation and detection

  • Inventory Easy Cart Shopping Cart instances and confirm installed version.
  • Review whether the search module accepts and reflects user-controlled keyword input.
  • Test remediation in a non-production environment using safe XSS validation methods.
  • Review web logs for unusual search keyword patterns and unexpected script-like content.
  • Confirm fixes prevent script execution while preserving search functionality.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · medium confidence lookup

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.

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cve · low confidence lookup

CVE-2021-47856 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.4 (3.1)
Known Exploited
No
Published

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

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
6.4CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N3.12.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.4Medium
CVSS 3.1 vector shape for CVE-2021-47856Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
NetArt MediaEasy Cart Shopping Cart2021unaffected
Weakness

CWE details

CWE-79

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.