Security readout for executives and security teams
Plain-English summary
This Magento Commerce flaw could let an unauthenticated attacker trick a user into causing unauthorized customer metadata changes through the GraphQL API. The impact is integrity-focused, not data theft or outage, and the CVSS score is medium.
Executive priority
Treat as a moderate e-commerce integrity risk. Remediate during the normal security patch cycle, faster for internet-facing stores with active customer account workflows.
Technical view
CVE-2021-21027 is a CWE-352 CSRF issue in Magento Commerce 2.4.1 and earlier, 2.4.0-p1 and earlier, and 2.3.6 and earlier. The affected surface is GraphQL API behavior that can permit unauthorized customer metadata modification without admin console access.
Likely exposure
Organizations running affected Magento Commerce versions with reachable GraphQL functionality may be exposed, especially where customer metadata changes are possible through browser-mediated requests.
Exploitation context
The provided sources do not show KEV listing or active exploitation. Exploitation requires user interaction and targets unauthorized data modification, with no admin console access required.
Researcher notes
Evidence supports CSRF via GraphQL with low attack complexity, no privileges, required user interaction, and low integrity impact. The bundle does not provide exploit details, observed exploitation, or fixed version specifics.
Mitigation direction
- Check Adobe APSB21-08 for the vendor-supported remediation path.
- Prioritize upgrading affected Magento Commerce versions through official Adobe guidance.
- Review GraphQL state-changing requests for CSRF protections in supported configurations.
- Use monitoring to flag unexpected customer metadata changes.
Validation and detection
- Inventory Magento Commerce versions across production, staging, and backup environments.
- Confirm whether GraphQL API routes are reachable from untrusted networks.
- Review logs for unusual customer metadata modifications around exposed storefront activity.
- Verify remediation status against Adobe APSB21-08, not inferred fixed versions.
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-352: 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-2021-21027 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
- 4.3 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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.
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:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
4.3MediumVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://helpx.adobe.com/security/products/magento/apsb21-08.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.
Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.