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CVE Record

CVE-2021-36030: Magento Commerce Improper Input Validation During Checkout Process Could Lead To Privilege Escalation

Magento Commerce versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by an improper input validation vulnerability during the checkout process. An unauthenticated attacker can leverage this vulnerability to alter the price of items.

HighCVSS 7.5Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This flaw affects Adobe Magento Commerce checkout handling. An unauthenticated attacker could change item prices during checkout, creating a direct revenue and transaction-integrity risk for exposed online stores.

Executive priority

Treat this as a high-priority ecommerce integrity issue. The business risk is unauthorized price reduction, not data theft or outage based on the provided sources.

Technical view

CVE-2021-36030 is improper input validation in the Magento Commerce checkout process. Listed affected versions are 2.4.2 and earlier, 2.4.2-p1 and earlier, and 2.3.7 and earlier. CVSS 3.1 is 7.5 with network access, low complexity, no privileges, no user interaction, and high integrity impact.

Likely exposure

Exposure is most likely on internet-facing Magento Commerce storefronts running the affected version ranges. The source bundle identifies Magento Commerce only; it does not establish impact for other Adobe Commerce or Magento Open Source products.

Exploitation context

The source bundle says an unauthenticated attacker can alter item prices. It does not cite public exploitation, and the CVE is not marked in CISA KEV, so active exploitation is not established here.

Researcher notes

The record maps to CWE-20 and has integrity-only CVSS impact. The bundle lacks fixed-version details, proof-of-concept status, and deeper checkout component specifics, so validation should rely on version inventory and Adobe advisory confirmation.

Mitigation direction

  • Review Adobe APSB21-64 and apply the relevant vendor security update.
  • Inventory Magento Commerce storefront versions against the affected ranges.
  • Prioritize internet-facing checkout systems for remediation.
  • Review recent orders for unexpected price changes or discount anomalies.

Validation and detection

  • Confirm no production storefront runs 2.4.2, 2.4.2-p1, 2.3.7, or earlier.
  • Verify the Adobe advisory has been applied for each Magento Commerce branch.
  • Check order, cart, and payment records for price-integrity discrepancies.
  • Ensure vulnerability management records cite CVE-2021-36030 and remediation status.
Prepared
Confidence
medium
Sources
3

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 · low confidence lookup

CWE-20: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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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description · low confidence lookup

Privilege behavior lookup

The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2021-36030 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
High
CVSS
7.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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
2Source 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
7.5CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N3.93.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

7.5High
CVSS 3.1 vector shape for CVE-2021-36030Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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
AdobeMagento Commerceunspecified, unspecified, unspecified, unspecifiedListed
Weakness

CWE details

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

CWE-20 · source CWE mapping

Improper Input Validation

Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.