Vulnerability advisory

CVE-2021-28556

Published Jun 28, 2021Updated Oct 24, 2026OSV record ↗

Also known as BIT-magento-2021-28556GHSA-39ch-rg26-gmq5

Severity

CVSS 3.xCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Affected versions

Repository

Affected commits	Fixed by commit
GIT github.com/magento/devdocs ↗
All commits through 9eba2c99bed83d8297c03b7ea3b110500cc5b955	No fix listed
Also listed as affected (22) `2.3.0` `2.2.7` `2.1.16` `2.4.2` `2.4.1-p1` `2.3.6-p1` `1.x-eos` `2.3.5` `2.3.4` `2.3.3-p1` `2.2.11` `2.3.2` `2.2.9` `2.1.18` `2.3.1` `2.2.8` `2.1.17` `2.2.6` `2.1.15` `2.2.5` `2.1.14` `2.0.8`
GIT github.com/magento/magento2 ↗
All commits before 44a7b6079bcac5ba92040b16f4f74024b4f34d09	`44a7b6079bcac5ba92040b16f4f74024b4f34d09`
6729b6e01368248abc33300208eb292c95050203 through 33242e4b19cf207d7b73f7791ef894b48bb41f8a	No fix listed
Also listed as affected (33) `2.4.2` `2.2.0-RC1.3` `2.2.0-RC1.2` `2.2.0-RC1.1` `2.1.0` `2.1.0-rc3` `2.1.0-rc2` `2.1.0-rc1` `2.0.0` `2.0.0-rc` `0.74.0-beta1` `0.42.0-beta3` `0.1.0-alpha108` `0.42.0-beta1` `0.1.0-alpha107` `0.1.0-alpha106` `0.1.0-alpha105` `0.1.0-alpha104` `0.1.0-alpha103` `0.1.0-alpha102` `0.1.0-alpha101` `0.1.0-alpha100` `0.1.0-alpha99` `0.1.0-alpha98` `0.1.0-alpha97` `0.1.0-alpha96` `0.1.0-alpha95` `0.1.0-alpha94` `0.1.0-alpha93` `0.1.0-alpha92` `0.1.0-alpha91` `0.1.0-alpha90` `0.1.0-alpha89`

Description

Magento versions 2.4.2 (and earlier), 2.4.1-p1 (and earlier) and 2.3.6-p1 (and earlier) are affected by a DOM-based Cross-Site Scripting vulnerability on mage-messages cookies. Successful exploitation could lead to arbitrary JavaScript execution by an unauthenticated attacker. User interaction is required for successful exploitation.

References

Advisoryhelpx.adobe.com/security/products/magento/apsb21-30.html ↗