CVE-2021-21026
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedMagento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier) and 2.3.6 (and earlier) are affected by an improper authorization vulnerability in the integrations module. Successful exploitation could lead to unauthorized access to restricted resources by an unauthenticated attacker. Access to the admin console is required for successful exploitation.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceAn improper authorization vulnerability in Magento 2's integrations module allows an authenticated admin user to bypass authorization checks and access restricted resources they should not have permission to access.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 2.3.6= 2.3.6= 2.4.0= 2.4.1CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- High
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Determine your Magento 2 installation versionRun the Magento CLI command to retrieve the installed version (e.g., bin/magento --version) or check the composer.json file in your Magento root directoryAffected if The installed version is 2.3.6, 2.4.0, 2.4.1, or any version earlier than 2.3.6
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Confirm the integrations module is enabledCheck your Magento configuration to verify the integrations module (Magento_Integration) is installed and enabledAffected if The integrations module is active on a vulnerable Magento version (2.3.6, 2.4.0, 2.4.1, or < 2.3.6)
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Review admin user role permissions for integration-related accessNavigate to System > Permissions > User Roles in the Magento admin panel and inspect the role resources assigned to admin users, specifically looking for integration-related permissionsAffected if Admin users with limited roles can access the integrations module configuration or API resources they should not have permission to access
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Verify integration OAuth consumers are restricted appropriatelyCheck the Integrations configuration (System > Extensions > Integrations) to identify any OAuth consumers and confirm they are scoped to appropriate admin user rolesAffected if Integration consumers exist and are accessible to admin users who lack explicit authorization for those integration endpoints
Your environment is affected if you are running Magento version 2.3.6, 2.4.0, 2.4.1, or any version prior to 2.3.6 and the integrations module is enabled, allowing authenticated admin users to bypass authorization checks.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor data2.3.6
Apply the applicable Adobe security patch (or upgrade to a patched Magento version) to fix the authorization bypass in the integrations module, then verify admin users cannot access resources outside their assigned permissions.
- Consultation4.0 h
- Implementation4.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,504.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-21026 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2021-21026 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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