CVE-2021-36043 | Magento Commerce Authenticated Blind SSRF Could Lead To Remote Code Execution

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.

Published: 2021-09-01 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-36043 is rated Moderate Risk (58.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.88%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-36043

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 2.61% 1.88% -0.73%
2 2025-11-21 3.86% 2.61% -1.25%
3 2025-11-18 — 3.86% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-36043

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.0 3.1 HIGH
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.3 6.0 [email protected]
6.6 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 0.7 5.9 [email protected]
6.0 2.0 MEDIUM
AV:N/AC:M/Au:S/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 6.8 6.4 [email protected]

Weakness enumeration for CVE-2021-36043

GitHub Security Advisory for CVE-2021-36043

GHSA-36xq-7w8w-xp68 · Severity: high · Ecosystem: composer — Magento affected by a blind SSRF vulnerability in the bundled dotmailer extension

Affected software / configurations for CVE-2021-36043

Vendor Product Version Raw CPE
adobe adobe_commerce >= 2.3.0, <= 2.3.7 cpe:2.3:a:adobe:adobe_commerce:*:*:*:*:*:*:*:*
adobe adobe_commerce >= 2.4.0, <= 2.4.2 cpe:2.3:a:adobe:adobe_commerce:*:*:*:*:*:*:*:*
adobe adobe_commerce 2.4.2 cpe:2.3:a:adobe:adobe_commerce:2.4.2:p1:*:*:*:*:*:*
adobe magento_open_source >= 2.3.0, <= 2.3.7 cpe:2.3:a:adobe:magento_open_source:*:*:*:*:*:*:*:*
adobe magento_open_source >= 2.4.0, <= 2.4.2 cpe:2.3:a:adobe:magento_open_source:*:*:*:*:*:*:*:*
adobe magento_open_source 2.4.2 cpe:2.3:a:adobe:magento_open_source:2.4.2:p1:*:*:*:*:*:*

References for CVE-2021-36043

cvelogic Threat Intelligence