CVE-2021-36043: Magento/project community edition Magento Affected By A Blind Vulnerability
HIGHCVE-2021-36043 is a HIGH (CVSS 8.0) magento affected by a blind vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting Magento/project community edition libraries in the Packagist ecosystem. The issue involves magento affected by a blind ssrf vulnerability in the bundled dotmailer extension. Remediation is available by upgrading affected packages to version 2.3.7-p1, 2.4.2-p2.
CVE-2021-36043 at a Glance
Security Impact
CVSS: 8.0
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H).
How to Fix CVE-2021-36043
To remediate this vulnerability, upgrade all affected Magento/project community edition dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade magento/project-community-edition to Latest secure releaseUpgrade magento/community-edition to 2.3.7-p1Upgrade magento/community-edition to Latest secure releaseUpgrade magento/community-edition to 2.4.2-p2Upgrade magento/community-edition to Latest secure releaseRun the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for magento/project-community-editionHow to Check if You Are Affected
To determine whether your application is affected by CVE-2021-36043, inspect your project dependencies for Magento/project community edition:
inspect dependencies for magento/project-community-editionAnalyze the terminal output to locate any version of Magento/project community edition in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.3.7-p1), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-918: Server-Side Request Forgery (SSRF), where the web server receives a url or similar request from an upstream component and retrieves the contents of this url, but it does not sufficiently ensure that the request is being sent to the expected destination. In Magento/project community edition, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2021-36043 Affected Magento/project community edition Versions
5 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
magento/project-community-edition
|
Packagist |
≤ 2.0.2
|
|
|
magento/community-edition
|
Packagist |
< 2.3.7-p1
|
2.3.7-p1
|
|
magento/community-edition
|
Packagist |
2.3.7
All 1 versions
2.3.7
|
None specified
|
|
magento/community-edition
|
Packagist |
≥ 2.4.2-p1
< 2.4.2-p2
|
2.4.2-p2
|
|
magento/community-edition
|
Packagist |
2.4.2
All 1 versions
2.4.2
|
None specified
|
References
Frequently Asked Questions
What is CVE-2021-36043?
Which Magento/project community edition versions are affected?
What version fixes CVE-2021-36043?
Is magento/project-community-edition affected?
Is magento/community-edition affected?
What is the CVSS score of CVE-2021-36043?
What CWE is associated with CVE-2021-36043?
How can I check Packagist dependencies for CVE-2021-36043?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-36xq-7w8w-xp68",
"modified" : "2025-11-07T23:27:42Z",
"published" : "2022-05-24T19:12:46Z",
"aliases" : [ "CVE-2021-36043" ],
"summary" : "Magento affected by a blind SSRF vulnerability in the bundled dotmailer extension",
"details" : "Magento Commerce versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by a blind SSRF vulnerability in the bundled dotmailer extension. An attacker with admin privileges could abuse this to achieve remote code execution should Redis be enabled.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Packagist",
"name" : "magento/project-community-edition"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"last_affected" : "2.0.2"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "magento/community-edition"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "2.3.7-p1"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "magento/community-edition"
},
"versions" : [ "2.3.7" ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "magento/community-edition"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.4.2-p1"
}, {
"fixed" : "2.4.2-p2"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "magento/community-edition"
},
"versions" : [ "2.4.2" ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-36043"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/magento/magento2"
}, {
"type" : "WEB",
"url" : "https://helpx.adobe.com/security/products/magento/apsb21-64.html"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-918" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2025-11-07T23:27:42Z",
"nvd_published_at" : "2021-09-01T15:15:00Z"
}
}