CVE-2021-28584 [Medium] | Path Traversal in Magento

Magento versions 2.4.2 (and earlier), 2.4.1-p1 (and earlier) and 2.3.6-p1 (and earlier) are affected by a Path Traversal vulnerability when creating a store with child theme.Successful exploitation could lead to arbitrary file system write by an authenticated attacker. Access to the admin console is required for successful exploitation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2025-11-01	0.78%	0.57%	-0.20%
2	2025-03-30	1.19%	0.78%	-0.41%
3	2025-03-29	—	1.19%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2025-11-01

0.78%

0.57%

-0.20%

2025-03-30

1.19%

0.78%

-0.41%

2025-03-29

—

1.19%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.4	3.1	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L` 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:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. 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:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:L) Might cause slowdowns, glitches, or partial disruption—not a full brick.	2.8	2.5	[email protected]
7.2	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/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:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. 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.	1.2	5.9	[email protected]
6.5	2.0	MEDIUM	`AV:N/AC:L/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:L) Exploitation conditions are straightforward and predictable. 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.	8.0	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

5.4

3.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L 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:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
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:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:L): Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L): Might cause slowdowns, glitches, or partial disruption—not a full brick.

2.8

2.5

[email protected]

7.2

3.1

HIGH

CVSS:3.1/AV:N/AC:L/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:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
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.

1.2

5.9

[email protected]

6.5

2.0

MEDIUM

AV:N/AC:L/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:L): Exploitation conditions are straightforward and predictable.
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.

8.0

6.4

[email protected]

Affected software / configurations for CVE-2021-28584

Vendor	Product	Version	Raw CPE
magento	magento	< 2.3.6	cpe:2.3:a:magento:magento:::::commerce:::*
magento	magento	< 2.3.6	cpe:2.3:a:magento:magento:::::open_source:::*
magento	magento	2.3.6	cpe:2.3:a:magento:magento:2.3.6:-:::commerce:::*
magento	magento	2.3.6	cpe:2.3:a:magento:magento:2.3.6:-:::open_source:::*
magento	magento	2.3.6	cpe:2.3:a:magento:magento:2.3.6:p1:::commerce:::*
magento	magento	2.3.6	cpe:2.3:a:magento:magento:2.3.6:p1:::open_source:::*
magento	magento	2.4.1	cpe:2.3:a:magento:magento:2.4.1:-:::commerce:::*
magento	magento	2.4.1	cpe:2.3:a:magento:magento:2.4.1:-:::open_source:::*
magento	magento	2.4.1	cpe:2.3:a:magento:magento:2.4.1:p1:::commerce:::*
magento	magento	2.4.1	cpe:2.3:a:magento:magento:2.4.1:p1:::open_source:::*
magento	magento	2.4.2	cpe:2.3:a:magento:magento:2.4.2::::commerce:::
magento	magento	2.4.2	cpe:2.3:a:magento:magento:2.4.2::::open_source:::

References for CVE-2021-28584

URL	Tags
https://helpx.adobe.com/security/products/magento/apsb21-30.html	Patch Vendor Advisory

URL

CVE-2021-28584 | Magento Commerce path traversal vulnerability in child theme store creation

Exploit prediction scoring system (EPSS) score for CVE-2021-28584

Common vulnerability scoring system (CVSS) metrics for CVE-2021-28584

Weakness enumeration for CVE-2021-28584

GitHub Security Advisory for CVE-2021-28584

Affected software / configurations for CVE-2021-28584

References for CVE-2021-28584