Security readout for executives and security teams
Plain-English summary
This issue affects older Magento Commerce stores and could let a logged-in attacker access sensitive information by abusing the quoteId parameter. The public record rates it medium severity, but confidentiality impact is high, so exposed ecommerce environments should treat it as a meaningful customer-data risk.
Executive priority
Address during the next security maintenance window, sooner for internet-facing commerce stores handling regulated or high-value customer data. The main business risk is unauthorized disclosure of sensitive ecommerce information.
Technical view
CVE-2021-36039 is an incorrect authorization issue, tracked as CWE-863, in Magento Commerce. A network attacker with low privileges and no user interaction can abuse quoteId handling to disclose sensitive information. The CVSS 3.1 score is 6.5 with high confidentiality impact and no integrity or availability impact.
Likely exposure
Likely exposure is Magento Commerce 2.4.2 and earlier, 2.4.2-p1 and earlier, and 2.3.7 and earlier. The bundle does not identify affected Magento Open Source versions.
Exploitation context
The source bundle does not show active exploitation, and KEV status is false. The CVSS vector indicates network reachability, low required privileges, and no user interaction, making vulnerable authenticated storefront or account workflows relevant.
Researcher notes
Evidence is limited to the CVE record and Adobe advisory reference. The record identifies quoteId as the relevant parameter but does not provide technical root-cause detail, exploit maturity, or concrete mitigation text in the supplied bundle.
Mitigation direction
- Check Adobe APSB21-64 for the vendor-approved remediation path.
- Inventory all Magento Commerce instances and compare versions against listed affected ranges.
- Prioritize internet-facing stores that process customer, cart, or order data.
- Restrict unnecessary low-privilege account access where operationally feasible.
- Monitor vendor advisories for any updated guidance or affected-version clarification.
Validation and detection
- Confirm each Magento Commerce instance version and edition.
- Verify whether Adobe APSB21-64 remediation has been applied.
- Review change records for relevant Magento security updates after September 2021.
- Check logs for suspicious quote, cart, or checkout data access patterns.
- Document remaining affected systems and owner-approved remediation dates.
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-863: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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-2021-36039 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
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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.
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:L/UI:N/S:U/C:H/I:N/A:N2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://helpx.adobe.com/security/products/magento/apsb21-64.htmlCVE reference · x_refsource_MISC
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.
Incorrect Authorization
Incorrect Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.